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A rock is dropped off a 20m tall cliff. How long does it take to get to the bottom of the cliff? What is the instantaneous velocity right before it hits the bottom of the cliff?
10 years ago

Answers

Henry
a. h = 0.5g*t^2
h = 20 m
g = +9,8 m/s^2
Solve for t.

b. V^2 = Vo^2 + 2g*h
Vo = 0
g = +9.8 m/s^2
h = 20 m.
Solve for V.
10 years ago
Rob
yes
9 years ago
Anonymous
2 seconds?
7 years ago

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