Q. 494.2( 17 Votes )
A boy weighing 40
Answer :
Given,
Mass of the boy, m = 40kg
Height gained by it, h = 1.5m
(i) K.E = 0 at highest point because velocity of the high jumper at the highest point will be 0
(ii) Potential Energy, P.E = mgh
= 40 × 10 × 1.5
= 600 J
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