7KinematicsMedium1 mark
A lead sphere is released from rest at point X, a long way above the surface of a planet. The
sphere falls in a vacuum. After a time of 4.0 s, it has fallen through a vertical distance of 3.0 m.
Assume the acceleration of free fall is constant.
How far will the sphere have fallen from point X at a time of 20 s after its release?