A student releases a steel ball from rest from the top of a vertical tower

PHYSICS · Multi-part · AP · Physics C: Mechanics · Kinematics · Kinematics

Problem

A student releases a steel ball from rest from the top of a vertical tower. Because of a reaction delay, the stopwatch is started

0.6\,\text{s}

after the ball is released. The stopwatch runs for

1.8\,\text{s}

until the ball strikes the ground. Take

g = 9.8\,\text{m s}^{-2}

. Calculate: (i) the total time for which the ball was actually in free fall (ii) the height of the tower