Q.

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

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answer is 1.2.

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Detailed Solution

Velocity of combined mass, v=m1v1−m2v2m1+m2=0.1×1−0.4×0.10.5=0.12 m/s∴ Distance travelled by combined mass = v×t=0.12 × 10 = 1.2 m.

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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