SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?
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1, 520 N
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0 N
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4.21 N
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Not enough information to answer
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Explanation:
Detailed explanation-1: -After reaching terminal velocity, the falling body falls with constant speed so the net force on it must be zero. This means the force of gravity (its weight) acting downward is just balanced by the force of air resistance acting upward.
Detailed explanation-2: -It implies the object is gaining a speed of 9.8 m/s each second.
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