PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Two identical rubber balls, P and Q, are projected vertically upward from the same point one after the other. Ball P is thrown with an initial speed of 8m/s while ball Q is thrown with an initial speed of 12m/s. Assume g=10m/s2.
(i) Calculate the maximum height reached by each ball above the point of projection.
(ii) Find the ratio of the maximum heights HQ:HP reached by balls Q and P.
(iii) Determine the ratio of the times taken to reach their respective highest points tQ:tP.