A parachute and a box start to fall with an opposing force of 30N. The total mass of the parachute and the box?
Q. A parachute and a box start to fall with an opposing force of 30N. The total mass of the parachute and the box is 5.0kg. Find the resultant force. The parachute and the box now landed on a tree and the box got separated from the parachute and starts to fall from rest to the ground in 2.4s. Find the velocity with which the box strikes the ground. Find the average velocity during its fall. Find the distance fallen.
Asked by netwiyan - Sat Jun 6 20:54:56 2009 - - 1 Answers - 1 Comments
A. Weight = mg = 5*9.8 = 49 N Resultant force = 49 - 30 = 19 N Box initial velocity at tree= 0 s= ut + 1/2 gt^2 s= 0 + 1/2 * 9.8 * 2.4* 2.4 s= 28.224 m Distance fallen = 28.224 m Av. vel= distance/ time = 28.224/2.4 = 11.76 m/s
Answered by MBTM - Sat Jun 6 22:08:57 2009
Q. A parachute and a box start to fall with an opposing force of 30N. The total mass of the parachute and the box is 5.0kg. Find the resultant force. The parachute and the box now landed on a tree and the box got separated from the parachute and starts to fall from rest to the ground in 2.4s. Find the velocity with which the box strikes the ground. Find the average velocity during its fall. Find the distance fallen.
Asked by netwiyan - Sat Jun 6 20:54:56 2009 - - 1 Answers - 1 Comments
A. Weight = mg = 5*9.8 = 49 N Resultant force = 49 - 30 = 19 N Box initial velocity at tree= 0 s= ut + 1/2 gt^2 s= 0 + 1/2 * 9.8 * 2.4* 2.4 s= 28.224 m Distance fallen = 28.224 m Av. vel= distance/ time = 28.224/2.4 = 11.76 m/s
Answered by MBTM - Sat Jun 6 22:08:57 2009
How to get a parachute in battlefield vietnam?
Q. I have been try to activate the parachute from bailing out of a plane in the flaming darts level, for activating the parachute i pressed 9. Do u have to get the parachute from some where in that level.
Asked by mac_pc - Tue Apr 17 09:31:10 2007 - - 1 Answers - 0 Comments
A. You should never have to find the parachute in the game environment. Make sure you have all of your keys binded correctly and hold down the binded key.
Answered by sleepthei - Tue Apr 17 09:42:06 2007
Q. I have been try to activate the parachute from bailing out of a plane in the flaming darts level, for activating the parachute i pressed 9. Do u have to get the parachute from some where in that level.
Asked by mac_pc - Tue Apr 17 09:31:10 2007 - - 1 Answers - 0 Comments
A. You should never have to find the parachute in the game environment. Make sure you have all of your keys binded correctly and hold down the binded key.
Answered by sleepthei - Tue Apr 17 09:42:06 2007
How do I make a parachute to hold a container containing a pumpkin?
Q. My sister is doing a Pumpkin drop. They need to know how to make a parachute strong enough to hold a container holding a pumpkin and other materials. Last year they used a camping tarp and rope, and the rope got tangled in the process It went SPLAT!! Any Help would be greatly appreciated.
Asked by Michael - Sat Sep 5 11:53:15 2009 - - 1 Answers - 0 Comments
A. try using wires from old computer mouses and attach them to sides of the container plus the tarp and some plastic bags not sure if it will work
Answered by Anna M - Sat Sep 5 12:29:37 2009
Q. My sister is doing a Pumpkin drop. They need to know how to make a parachute strong enough to hold a container holding a pumpkin and other materials. Last year they used a camping tarp and rope, and the rope got tangled in the process It went SPLAT!! Any Help would be greatly appreciated.
Asked by Michael - Sat Sep 5 11:53:15 2009 - - 1 Answers - 0 Comments
A. try using wires from old computer mouses and attach them to sides of the container plus the tarp and some plastic bags not sure if it will work
Answered by Anna M - Sat Sep 5 12:29:37 2009
How do you drop an egg safely without using a parachute?
Q. For my science experiment, we have to drop an egg from the second floor. We are allow to use up to 10 sheets of paper and some tape but are not allowed to make a parachute. Can you help?
Asked by LaLa1408 - Sat Jan 23 11:25:20 2010 - - 4 Answers - 0 Comments
A. Use your excellent knowledge of impulse dp = M dV = f dt; where dp is the change in momentum for the egg of mass M as its impact velocity V goes to zero over some impact interval dt. The impact velocity V = sqrt(2aH); where H is the height of the drop and a = g(1 - D/W) is the acceleration as the egg and device (your paper and tape) with weight W = (m + M)g and drag D fall to the ground below. g = 32.2 ft/sec^2 or 9.81m/sec^2 depending on the units you are using. m is the mass of your paper and tape device. The force f, in the impulse equation, is the thing that will break your egg. The force on the egg f is dp = M dV/dt = f; so it's proportional to the force F on the whole thing. That is f = (M/(M + m))F. I mention this because… [cont.]
Answered by oldprof - Sat Jan 23 13:29:05 2010
Q. For my science experiment, we have to drop an egg from the second floor. We are allow to use up to 10 sheets of paper and some tape but are not allowed to make a parachute. Can you help?
Asked by LaLa1408 - Sat Jan 23 11:25:20 2010 - - 4 Answers - 0 Comments
A. Use your excellent knowledge of impulse dp = M dV = f dt; where dp is the change in momentum for the egg of mass M as its impact velocity V goes to zero over some impact interval dt. The impact velocity V = sqrt(2aH); where H is the height of the drop and a = g(1 - D/W) is the acceleration as the egg and device (your paper and tape) with weight W = (m + M)g and drag D fall to the ground below. g = 32.2 ft/sec^2 or 9.81m/sec^2 depending on the units you are using. m is the mass of your paper and tape device. The force f, in the impulse equation, is the thing that will break your egg. The force on the egg f is dp = M dV/dt = f; so it's proportional to the force F on the whole thing. That is f = (M/(M + m))F. I mention this because… [cont.]
Answered by oldprof - Sat Jan 23 13:29:05 2010
How do you deploy a parachute on Crysis Wars?
Q. I've been playing the battlegrounds map on instant action, and the aircrafts aparantly come with a parachute but I dont know how to deploy it. It says Deploy Parachute Now! but does it do it automatically or do I have to press something?
Asked by timbobojob - Wed Dec 24 11:30:29 2008 - - 1 Answers - 0 Comments
A. its either the space bar or right-click, but i think its space.
Answered by Space_nerd - Wed Dec 24 14:11:19 2008
Q. I've been playing the battlegrounds map on instant action, and the aircrafts aparantly come with a parachute but I dont know how to deploy it. It says Deploy Parachute Now! but does it do it automatically or do I have to press something?
Asked by timbobojob - Wed Dec 24 11:30:29 2008 - - 1 Answers - 0 Comments
A. its either the space bar or right-click, but i think its space.
Answered by Space_nerd - Wed Dec 24 14:11:19 2008
How likely is it to Die From a Parachute Fail?
Q. How likely is a parachute to fail?
Asked by Hard As Nails - Tue Jun 30 04:34:46 2009 - - 4 Answers - 0 Comments
A. Absolutely superb answer on parachute deaths and odds here:
Answered by dave - Tue Jun 30 05:07:44 2009
Q. How likely is a parachute to fail?
Asked by Hard As Nails - Tue Jun 30 04:34:46 2009 - - 4 Answers - 0 Comments
A. Absolutely superb answer on parachute deaths and odds here:
Answered by dave - Tue Jun 30 05:07:44 2009
What is it called when you pull a parachute with a boat?
Q. There's a special parachute that you can buy and put on and have someone pull you with a boat, but I can't remember what it's called. Anyone have any ideas/where to buy one?
Asked by Hank Ferris - Tue Aug 11 19:14:16 2009 - - 2 Answers - 0 Comments
A. parasailing
Answered by Charles H - Tue Aug 11 19:21:39 2009
Q. There's a special parachute that you can buy and put on and have someone pull you with a boat, but I can't remember what it's called. Anyone have any ideas/where to buy one?
Asked by Hank Ferris - Tue Aug 11 19:14:16 2009 - - 2 Answers - 0 Comments
A. parasailing
Answered by Charles H - Tue Aug 11 19:21:39 2009
Why does a parachute jumper hit the ground w/ bent knees and then roll to a stop?
Q. Why does a parachute jumper hit the ground with bent knees and then roll to a stop? I don't need an elaborate explanation. This is just a physics question I am stuck on in our unit, Momentum and Impulse.
Asked by delilah - Thu Jan 3 20:10:11 2008 - - 5 Answers - 0 Comments
A. It is called a parachute landing fall or PLF. A PLF is used to distribute the force of landing over the body so that you can prevent breaking an ankle or leg. By hitting the ground with the knees together and relaxed the jumper will roll onto the side on one leg, to his/her butt and then back. I have done many PLFs during my first year of skydiving but now I can land my canopy softly and standing up nearly every time.
Answered by Merlyn - Thu Jan 3 22:48:12 2008
Q. Why does a parachute jumper hit the ground with bent knees and then roll to a stop? I don't need an elaborate explanation. This is just a physics question I am stuck on in our unit, Momentum and Impulse.
Asked by delilah - Thu Jan 3 20:10:11 2008 - - 5 Answers - 0 Comments
A. It is called a parachute landing fall or PLF. A PLF is used to distribute the force of landing over the body so that you can prevent breaking an ankle or leg. By hitting the ground with the knees together and relaxed the jumper will roll onto the side on one leg, to his/her butt and then back. I have done many PLFs during my first year of skydiving but now I can land my canopy softly and standing up nearly every time.
Answered by Merlyn - Thu Jan 3 22:48:12 2008
How many feet does it take for a skydiving parachute to open?
Q. I was wondering how many feet it takes for a skydiving parachute to open. Please list your source.
Asked by King ofda Cage - Tue May 13 19:08:26 2008 - - 3 Answers - 0 Comments
A. the distance you travel during the opening sequence is a function of the type of canopy, the packing method and your velocity and altitude. When I pull my main at terminal velocity it takes about 700 to 900 feet for free fall for the canopy to open. My reserve on the other hand would be completely open and flying in less than 400 feet. If I deploy the parachute as soon as I exit the aircraft I can open in the prop blast and be open on or nearly on the same level of the aircraft.
Answered by Merlyn - Wed May 14 12:18:33 2008
Q. I was wondering how many feet it takes for a skydiving parachute to open. Please list your source.
Asked by King ofda Cage - Tue May 13 19:08:26 2008 - - 3 Answers - 0 Comments
A. the distance you travel during the opening sequence is a function of the type of canopy, the packing method and your velocity and altitude. When I pull my main at terminal velocity it takes about 700 to 900 feet for free fall for the canopy to open. My reserve on the other hand would be completely open and flying in less than 400 feet. If I deploy the parachute as soon as I exit the aircraft I can open in the prop blast and be open on or nearly on the same level of the aircraft.
Answered by Merlyn - Wed May 14 12:18:33 2008
How does air exert an upward force on the parachute?
Q. How does air exert an upward force on the parachute? A parachute slows your descent after you jump out of a plane. In the parachute's frame of reference, wind is blowing upward toward it and its large area creates a great deal of upward drag force. This drag opposes your weight and slows your fall.
Asked by twinklingstar - Thu Jan 10 05:21:22 2008 - - 3 Answers - 0 Comments
A. it actually occurs due to viscous force exerted by any fluids like air...since surface area of parachute is more more viscous force acts upon it
Answered by pretender - Thu Jan 10 05:54:51 2008
Q. How does air exert an upward force on the parachute? A parachute slows your descent after you jump out of a plane. In the parachute's frame of reference, wind is blowing upward toward it and its large area creates a great deal of upward drag force. This drag opposes your weight and slows your fall.
Asked by twinklingstar - Thu Jan 10 05:21:22 2008 - - 3 Answers - 0 Comments
A. it actually occurs due to viscous force exerted by any fluids like air...since surface area of parachute is more more viscous force acts upon it
Answered by pretender - Thu Jan 10 05:54:51 2008
How would you make the best parachute for dropping egg?
Q. I need to throw an egg up 10 meters up in the air and have it land uncracked. I'm wondering what would be the best design for this parachute, and what kind of material to use, ect..
Asked by Guessica - Sun Apr 22 00:34:52 2007 - - 1 Answers - 0 Comments
A. I would probably use a garbage bag cut open and tie strings from the corners of the garbage bag to the egg.
Answered by yongchunhon - Sun Apr 22 02:08:44 2007
Q. I need to throw an egg up 10 meters up in the air and have it land uncracked. I'm wondering what would be the best design for this parachute, and what kind of material to use, ect..
Asked by Guessica - Sun Apr 22 00:34:52 2007 - - 1 Answers - 0 Comments
A. I would probably use a garbage bag cut open and tie strings from the corners of the garbage bag to the egg.
Answered by yongchunhon - Sun Apr 22 02:08:44 2007
Would a parachute attached to the egg provide enough cushion to keep it from breaking?
Q. How high could you drop an egg attached to a parachute?
Asked by Nicole T - Fri Feb 22 14:54:00 2008 - - 4 Answers - 0 Comments
A. I was in an egg drop contest and the one's with parachutes did best. It is possible for it to not break with the parachute alone, maybe 25% chance, but you'll do much better if you have a cushion underneath or can wrap the egg. The contest I was in, we droopped it from 10' I believe. Mind you this is EXACTLY how NASA landed the 2 rovers on Mars several years ago so they would not break. Did you know they are still going? They dropped them from a height of a few million miles.
Answered by Nathan - Fri Feb 22 19:08:07 2008
Q. How high could you drop an egg attached to a parachute?
Asked by Nicole T - Fri Feb 22 14:54:00 2008 - - 4 Answers - 0 Comments
A. I was in an egg drop contest and the one's with parachutes did best. It is possible for it to not break with the parachute alone, maybe 25% chance, but you'll do much better if you have a cushion underneath or can wrap the egg. The contest I was in, we droopped it from 10' I believe. Mind you this is EXACTLY how NASA landed the 2 rovers on Mars several years ago so they would not break. Did you know they are still going? They dropped them from a height of a few million miles.
Answered by Nathan - Fri Feb 22 19:08:07 2008
How much would it cost to buy a good parachute(new or used) and get licensed to skydive?
Q. How much for a parachute and license?
Asked by Jason W - Sun Oct 11 03:28:35 2009 - - 1 Answers - 0 Comments
A. To get to the solo level, you need AFF Level 14... I know of shops that will take you from 1 to 14 for about $2,000. A decent chute (main canopy) costs about $1,700 to more than $2,500, new. You'll need more than the chute itself though. You need 25 logged jumps to get your USPA 'A' license.
Answered by Aegis - Sun Oct 11 03:44:53 2009
Q. How much for a parachute and license?
Asked by Jason W - Sun Oct 11 03:28:35 2009 - - 1 Answers - 0 Comments
A. To get to the solo level, you need AFF Level 14... I know of shops that will take you from 1 to 14 for about $2,000. A decent chute (main canopy) costs about $1,700 to more than $2,500, new. You'll need more than the chute itself though. You need 25 logged jumps to get your USPA 'A' license.
Answered by Aegis - Sun Oct 11 03:44:53 2009
Is it possible to parachute off a building?
Q. If so, how tall does the building have to be? Does size of parachute matter?
Asked by Miguel O - Sun Apr 8 01:36:35 2007 - - 8 Answers - 0 Comments
A. Yes, ever heard of base jumping?
Answered by ben - Sun Apr 8 01:39:31 2007
Q. If so, how tall does the building have to be? Does size of parachute matter?
Asked by Miguel O - Sun Apr 8 01:36:35 2007 - - 8 Answers - 0 Comments
A. Yes, ever heard of base jumping?
Answered by ben - Sun Apr 8 01:39:31 2007
Why they do not put parachute in an airplane?
Q. Put the parachute in the plane to prevent the crash such as the drag car race or put an ejected seats like in air fighter plane.
Asked by johndoe - Wed Aug 22 11:03:29 2007 - - 12 Answers - 0 Comments
A. Some small general aviation aircraft such as Cirrus have built in parachutes. Putting them on large aircraft such as airliners would not be practical because of the size and weight that the parachute would take to work in aircraft of that size. Also, deploying the chute would require that the aircraft slow considerably before its use. In the smaller aircraft it has its own caveats. You still have to slow enough before deploying it. Last winter a Cirrus going over the Sierra in No. California iced up and went into a dive. The pilot attempted to use the chute and it wound up causing the plane to break up in mid air. That's about what would happen to a large aircraft that suddenly found itself out of control and hurtling towards the ground at… [cont.]
Answered by XP Pilot - Wed Aug 22 11:18:07 2007
Q. Put the parachute in the plane to prevent the crash such as the drag car race or put an ejected seats like in air fighter plane.
Asked by johndoe - Wed Aug 22 11:03:29 2007 - - 12 Answers - 0 Comments
A. Some small general aviation aircraft such as Cirrus have built in parachutes. Putting them on large aircraft such as airliners would not be practical because of the size and weight that the parachute would take to work in aircraft of that size. Also, deploying the chute would require that the aircraft slow considerably before its use. In the smaller aircraft it has its own caveats. You still have to slow enough before deploying it. Last winter a Cirrus going over the Sierra in No. California iced up and went into a dive. The pilot attempted to use the chute and it wound up causing the plane to break up in mid air. That's about what would happen to a large aircraft that suddenly found itself out of control and hurtling towards the ground at… [cont.]
Answered by XP Pilot - Wed Aug 22 11:18:07 2007
How can i deploy my parachute in Battlefield 1943?
Q. I was playing battlefield 1943 for the xbox 360 and i cant figure out how to deploy a parachute after i eject.
Asked by rick195 - Wed Jul 15 16:26:59 2009 - - 2 Answers - 0 Comments
A. no its a. jump out with b, then press a. not y (to the guy above me) hope this helps.
Answered by Little Big Man - Thu Jul 16 08:08:17 2009
Q. I was playing battlefield 1943 for the xbox 360 and i cant figure out how to deploy a parachute after i eject.
Asked by rick195 - Wed Jul 15 16:26:59 2009 - - 2 Answers - 0 Comments
A. no its a. jump out with b, then press a. not y (to the guy above me) hope this helps.
Answered by Little Big Man - Thu Jul 16 08:08:17 2009
What if you jump out of a air plane and your parachute don't open?
Q. What if your jumping from an air plane and your parachute don't open. How do you get out of it?
Asked by Isabella - Sat Dec 1 02:09:45 2007 - - 21 Answers - 0 Comments
A. You have a reserve parachute and if that one doesn't work you're dead.
Answered by becca311 - Sat Dec 1 02:12:08 2007
Q. What if your jumping from an air plane and your parachute don't open. How do you get out of it?
Asked by Isabella - Sat Dec 1 02:09:45 2007 - - 21 Answers - 0 Comments
A. You have a reserve parachute and if that one doesn't work you're dead.
Answered by becca311 - Sat Dec 1 02:12:08 2007
What are the vests called with the parachute on the back?
Q. I need one for football. You start running and a parachute kind of thing opens up in the back, giving you resistance. They are used to increase speed. But I can't get one when i don't know what it's called... can you guys help me?
Asked by J.J. - Mon Oct 5 22:23:37 2009 - - 1 Answers - 0 Comments
A. SPARQ Parachutes
Answered by Soldier for Christ - Mon Oct 5 22:33:00 2009
Q. I need one for football. You start running and a parachute kind of thing opens up in the back, giving you resistance. They are used to increase speed. But I can't get one when i don't know what it's called... can you guys help me?
Asked by J.J. - Mon Oct 5 22:23:37 2009 - - 1 Answers - 0 Comments
A. SPARQ Parachutes
Answered by Soldier for Christ - Mon Oct 5 22:33:00 2009
I need help in constructing a parachute egg with two pieces of paper only?
Q. I need to construct a parachute egg, but we are allowed to use two pieces of newspaper. 1 part for the parachute and the other part for the cushion for the egg. How can that be? Please help some one. It is by using the 2nd law of motion
Asked by Janice F - Thu Sep 18 17:33:03 2008 - - 1 Answers - 0 Comments
A. Fold one newspaper into a parachute. Cut a strip of paper from the other newspaper to make a rope. Use the remainder to make a cusion and tie the two together with the rope.
Answered by Mr. LOL - Sat Sep 20 20:44:09 2008
Q. I need to construct a parachute egg, but we are allowed to use two pieces of newspaper. 1 part for the parachute and the other part for the cushion for the egg. How can that be? Please help some one. It is by using the 2nd law of motion
Asked by Janice F - Thu Sep 18 17:33:03 2008 - - 1 Answers - 0 Comments
A. Fold one newspaper into a parachute. Cut a strip of paper from the other newspaper to make a rope. Use the remainder to make a cusion and tie the two together with the rope.
Answered by Mr. LOL - Sat Sep 20 20:44:09 2008
what is the average force of air on the parachute?
Q. A 4000 kg jet touches down at 240 km/h on the deck of an aircraft carrier, and immediately deploys a parachute to slow itself down. If the plane comes to a stop in 155 m, what is the average force of air on the parachute? Assume the parachute provides essentially all the stopping force.
Asked by dsgdh - Sun Sep 9 11:55:14 2007 - - 1 Answers - 0 Comments
A. Use X-Xo=Vo t +1/2at^2 and V -Vo=at so t=(V-Vo)/a to get a then F=ma
Answered by meg - Sun Sep 9 13:48:27 2007
Q. A 4000 kg jet touches down at 240 km/h on the deck of an aircraft carrier, and immediately deploys a parachute to slow itself down. If the plane comes to a stop in 155 m, what is the average force of air on the parachute? Assume the parachute provides essentially all the stopping force.
Asked by dsgdh - Sun Sep 9 11:55:14 2007 - - 1 Answers - 0 Comments
A. Use X-Xo=Vo t +1/2at^2 and V -Vo=at so t=(V-Vo)/a to get a then F=ma
Answered by meg - Sun Sep 9 13:48:27 2007
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