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A 200g ball is dropped from a height of 20m , on impact on a ground, it loses 30j of energy. Calculate the height of a ball as reaches on its rebound. (G=10m/s2
9 years ago

Answers

Damon
energy before hit = m g h
= .2 * 10 * 20
= 40 J
energy after hit = 10 J

m g h = 10
2 h = 10
h = 5 meters
9 years ago
Precious
2* 10* 20=40

Mgh=10
2h = 10
h = 5
4 years ago

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