PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
A hockey puck of mass 0.20kg slides due east at 4.0m/s. After striking the sidewall it moves due north at the same speed. What is the ratio of the magnitude of the puck’s change in momentum to the magnitude of its initial momentum?
(a) 2
(b) 0
(c) 2
(d) 1