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Equation 3.5
Δs = v_{o}· t + ½ · a · t^{2}

Equation 3.4
v = v_{o} + a · t

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 = v_{o}· t + ½ · a · t^{2}

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?
 use equation 3.4
 v = v_{o} + a · t

Equation 3.7
v^{2} = v_{o}^{2} + 2 · a · Δs

Equation 3.6
Δs = ½ · (v + v_{o} ) · t

