Classical Mechanics

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Moderate

Distance Travelled by a Skydiver in a Given Time Interval

CLMECH-INF6WM

Greg, who is taking skydiving lessons, is ready to do his first sky dive.

How far (in m) has Greg fallen 4 seconds after he jumped out of the plane?

Assume that he jumped straight downward with no initial vertical velocity and that he is falling at a constant acceleration of $6.9 \space m/s^2$.

Note that Greg's acceleration is not $9.8 \space m/s^2$, because he is also experiencing air resistance.