A parachutist falls freely for two minutes before the chute opens. After the chu
ID: 2179092 • Letter: A
Question
A parachutist falls freely for two minutes before the chute opens. After the chute is open, she drifts tothe ground for several minutes before landing. There is no wind, so she has no horizontal motion at any
time. Immediately before she reaches the ground, what can you say about her acceleration and velocity?
(a) Acceleration is upward, velocity is upward
(b) Acceleration is upward, velocity is downward
(c) Acceleration is zero, velocity is downward
(d) Acceleration is downward, velocity is downward
(e) Acceleration is downward, velocity is zero
Is it C because air resistance = netforce and acceleration = 0 therefore velocity is constant?
Explanation / Answer
(c) Acceleration is zero, velocity is downward it drifts . so net force upwards=net force down. so F=0, a=0
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