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Collisions

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Question

Two bodies of masses 0.1 kg and 0.4 kg move towards each other with the velocities 1 m/s and 0.1 m/s respectively, After collision they stick together. In 10 sec the combined mass travels

Moderate
Solution

Velocity of combined mass,  v=m1v1m2v2m1+m2
=0.1×10.4×0.10.5=0.12m/s
 Distance travelled by combined mass
                          = v×t=0.12 × 10 = 1.2 m.


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