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A parachutist flying in an aeroplane iumps when it is at a heightaeroplane jumps when it is at a height of 3 km above ground.He opens his parachute when he is about 1km above ground. Descriu |
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Answer» Answer: Suppose the AEROPLANE is flying horizontally. Now parachutist is like a freely falling body in vertically downward direction and has uniform velocity equal to aeroplane velocity in horizontal direction till he opens parachute at a height 1km from the ground. now after opening parachute , air resistance and buoyancy force also acts on him along with gravitational force. in the presence of these forces , NET ACCELERATION of parachutist becomes zero after falling through certain height . now he attains constant velocity known as terminal velocity and FINALLY he REACHES the ground with the same terminal. |
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