A table-tennis ball of mass is struck so that its initial velocity is at an angle of…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A table-tennis ball of mass 40g is struck so that its initial velocity is 12ms−1 at an angle of 45∘ above the horizontal. Use this information to answer the following:
(i) Calculate the magnitude of the ball’s initial momentum.
(ii) Determine the horizontal and vertical components of this initial momentum.
(iii) If the same ball were hit with the same speed but at 30∘ above the horizontal, find the new horizontal component of momentum and briefly comment on the change compared with part (ii).