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A ball of mass 100g falls from a height of 5m onto a floor and rebounds to a height of 3m. What energy is lost as a result of the impact on the floor

A ball of mass 100g falls from a height of 5m onto a floor and rebounds to a height of 3m. What energy is lost as a result of the impact on the floor

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Grade:11

2 Answers

Arun
25763 Points
3 years ago
PE = mgh 

since the final h is 60% of the initial h, 40% of the energy was lost. 

For the actual amount, plug in the values
Sanju
106 Points
3 years ago
Energy lost = mg(h- h1) = 0.1 kg * 9.81 m/s* (5-3) = 1.962 J
This energy lost goes in the form of heat & sound energy and deformation in the surfaces. This is what we call as INELASTIC COLLISION.
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