A smooth sphere of mass moving with velocity directly collides elastically with another sphere of mass at rest. After collision their final velocities are and respectively. The value of is |
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a) |
b) |
c) |
d) |

A smooth sphere of mass moving with velocity directly collides elastically with another sphere of mass at rest. After collision their final velocities are and respectively. The value of is |
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a) |
b) |
c) |
d) |

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