A ball of mass is projected vertically upward with an initial speed of
PHYSICS · Subjective · CBSE · Physics · Work and Energy · Work and Energy
Problem
A ball of mass 0.50kg is projected vertically upward with an initial speed of 10ms−1. Neglect air resistance.
(a) Calculate the maximum height reached by the ball above the point of projection.
(b) Find the work done by the gravitational force on the ball during its upward motion to the highest point. Clearly state whether this work is positive, negative or zero.
(c) Determine the change in the ball’s potential energy between the point of projection and the highest point and comment on the relation between your answers to parts (b) and (c).