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What is the acceleration of two falling sky divers mass 112.0 kg including parachute when the upward force of air resistance is equal to one-fourth of their weight?
Wiki User
∙ 11y ago
If air resistance is 1/4 of the falling object's weight, then the net force on it ...
(gravity + air resistance) ... is 3/4 of its weight downward. Its acceleration then
must be 3/4 of the acceleration of gravity, or 7.36 meters (24.1 feet) per second2.
The mass of the object, or how many of them there are, makes no difference.
You took care of that when you said that the air resistance is 1/4 of its weight.
Wiki User
∙ 11y ago
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What causes a parachute jumper to slow down?
A parachute is slowed down by air resistance.
What happens to the air resistance as the parachute opens?
Air resistance will increase when the parachute opens, and the decent of the skydiver will slow down.
What is a use of air resistance?
A parachute.
How is acceleration due to gravity be zero in a parachute?
At terminal velocity (constant velocity), the acceleration is zero, but prior to that, there is a downward acceleration.
Can a man in a parachute accelerate?
Yes. Acceleration can be positive or negative. When he jumps out of the airplane and is in free fall, he is accelerating in a downward direction, so his acceleration is negative. When he opens his parachute, he accelerates in an upward direction, so his acceleration is positive.
Why is the acceleration of gravity the same for all objects regardless of their mass but when 2 people jump from an airplane with the same size parachute the heavier person has greater final velocity?
Acceleration due to gravity is the same ONLY if you assume there is no air resistance. This is definitely not the case if you use a parachute.
What causes a parachute jumper to slow down?
A parachute is slowed down by air resistance.
What happens to the air resistance as the parachute opens?
Air resistance will increase when the parachute opens, and the decent of the skydiver will slow down.
What is a use of air resistance?
A parachute.
What air slows down a parachute?
Air Resistance slows the parachute down.
How is acceleration due to gravity be zero in a parachute?
At terminal velocity (constant velocity), the acceleration is zero, but prior to that, there is a downward acceleration.
What will be the effect of the acceleration due to gravity while jumping with a parachute?
The acceleration due to gravity doesn't change near the earth's surface, no matter what the cause of your fall is, or what position you assume during the fall, or what you're wearing. But a parachute sets up significant force opposite to gravity, because of air resistance. Since the acceleration is proportional to the net force, it can be reduced when there is considerable force canceling a significant fraction of the gravitational force.
Can a man in a parachute accelerate?
Yes. Acceleration can be positive or negative. When he jumps out of the airplane and is in free fall, he is accelerating in a downward direction, so his acceleration is negative. When he opens his parachute, he accelerates in an upward direction, so his acceleration is positive.
Explain how a parachute works using the terms air resistance surface area and gravity?
A parachute works as the gravity allows the parachute to go up into the air, then the surface area is covered with air resistance.
What effect terminal velocity and air resistance have on a sky diver when he opens his parachute?
Air resistance increases and terminal velocity decreases when the parachute has opened.
Compare the effects of gravity and air resistance on a falling skydiver before and after she opens her parachute.?
-- The force of gravity is unchanged before and after.-- The force of air resistance on the skydiver is greater before, and less after,because she is falling slower after the parachute opens.-- The effect on her of air resistance is greater after the parachute is open. Theincreased air resistance itself acts on the parachute, and its effect is transferredto the skydiver through her harness.
Compare the effects of gravity and air resistance on a falling skydiver before and after she opens her parachute?
-- The force of gravity is unchanged before and after.-- The force of air resistance on the skydiver is greater before, and less after,because she is falling slower after the parachute opens.-- The effect on her of air resistance is greater after the parachute is open. Theincreased air resistance itself acts on the parachute, and its effect is transferredto the skydiver through her harness.
