A ball is thrown vertically upward and reaches a certain height before falling back…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A ball is thrown vertically upward and reaches a certain height before falling back to the thrower’s hand. Which one of the following statements is correct while the ball is rising (air resistance neglected)?
(a) Its kinetic energy decreases and potential energy increases, but their sum remains constant.
(b) Its kinetic energy decreases and potential energy increases, but their sum decreases.
(c) Its kinetic energy increases and potential energy decreases.
(d) Both kinetic energy and potential energy remain constant.