A rock is dropped from a high cliff. It is observed to hit the ground
below after 4.92 s have passed. How high is the cliff?
Use equation 3.5
Δs = vo· t + ½ · a · t2
A rock is dropped from a high cliff. It is observed to hit the ground below after 4.92 s have passed. What is the velocity of the rock when it hits the ground?