If a 15kg ball takes five seconds to strike the ground when released from rest, at what height was the ball dropped?

A person on top of a tall building drops a rock. How long will it take for the rock to reach the ground? Ignore air resistance.

How long does it take an object to travel a distance of 30m from rest at a constant acceleration of 2m/s2?

A is dropped from a height of . A picture is taken when the ball is from the ground with an exposure time of . If the actual diameter of the ball is , what will the vertical diameter of the ball appear to be in the picture?

A person stands on the edge of a straight -high cliff and holds a ball over the edge. The person tosses the ball directly upward with an initial speed of . How long will it take the ball to hit the ground at the base of the cliff, below?

Assume for gravitational acceleration.

How far will an object travel after ten seconds if it is dropped into a bottomless pit?

You are driving at a speed of and suddenly, a tree falls down on the road blocking your path. You slam on your brakes to avoid hitting the fallen tree and thus, come to a complete stop. You were at a distance of away from the tree when you hit the brakes. Assuming that your vehicle does not skid, what is the minimum deceleration needed to avoid hitting the fallen tree?

A block is placed at a height of on a ramp at an incline of . It slides down from rest with an acceleration of due to a frictional force. What is the velocity of the block when it reaches the bottom of incline?