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A 1 Kg ball falls from a height of 25 cm andrebounds upto a height of 9 cm. The co-efficient ofrestitution is(1) 06 (2) 0.32 (3) 0.40(4) 0-56 |
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Answer» U = sqrt(2gH)= sqrt(2 × 9.8 × 0.25) v = sqrt(2gh)= sqrt(2 × 9.8 × 0.09) e = v / u= [sqrt(2 × 9.8 × 0.09)] / [sqrt(2 × 9.8 × 0.25)]= 0.6 Coefficient of restitution is 0.6 |
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