Question

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Answer 1

Answer:

Mass of the boy, m=40 kg

Height, h=1.5 m

At highest point,

velocity, v=0 m/s

(i) Kinetic energy at the highest point, KE=21mv2

KE=21×40×(0)2

KE=0 J

(ii) Potential energy at the highest point, U=mgh  (where g=acceleration due to gravity

U=40×9.8×1.5

U=588 J

Explanation:

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