A 90gm ball moving at 100cm/s collide head on with a stationary 10gm ball. The coefficient of restitution is 0.5. The collision is :
A
elastic
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B
inelastic
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C
perfect inelastic
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D
none
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Solution
The correct option is B inelastic If e=1, then the collision is called perfectly elastic. If 0<e<1, the collision is called inelastic. If e=0, the collision is called perfectly inelastic.