(i) A 200g ball is thrown vertically upward with a initial velocity of 30 ms-1. Draw a … will be the potential energy of ball at…
Given : m = 0.200 kg ; u = 30 ms-1
(i) Shown in diagram alongside.
(ii) 3 seconds
(iii) K.E = 1/2 mv2 = 1/2 x 200 (30)2 = 90 J.
(iv) P.E = K.E = 90 J.
[By the law of conservation of energy]