Asked by Omar

What is the speed of a 70kg rock after it has fallen freely for 1000m
Answered by oobleck
v^2 = 2gs
Now plug in your numbers
Answered by R_scott
d = 1/2 * a * t^2 ... t = √(2 d / a) = √(2 * 1000 / 9.8) ... seconds

the speed (velocity) of the rock is time multiplied by gravitational acceleration
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