A projectile of mass 4kg is fired vertically and reaches ...
A projectile of mass 4kg is fired vertically and reaches a maximum height of 40m. Calculate the potential energy at the highest point
(g = 10ms−2
1800J
1600J
600J
440J
Correct answer is B
Potential energy at the highest point = mgh
PE = 4 × 10 × 40 = 1600J
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