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Standard XII

Physics

Final Velocities

Figure shows ...

Question

Figure shows seven identical blocks kept equidistant on a frictionless floor. Initially, blocks a and b are moving right ward and block g is moving leftward, each with speed v = 3m/s. The other blocks are stationary. A series of perfectly elastic collisions occur. After the last collision the speed and direction of motion of

A will be at rest

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D will be 1.5m/s towards left

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F will be at rest

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G will be 3 m/s towards right

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Solution

The correct option is D G will be 3 m/s towards right
From conservation of momentum and elastic transfer last bodies f and g move with speed 3m/s A moves back with speed 3 m/s . rest all will be at rest.

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The correct option is D G will be 3 m/s towards rightFrom conservation of momentum and elastic transfer last bodies f and g move with speed 3m/s A moves back with speed 3 m/s . rest all will be at rest.

The correct option is D G will be 3 m/s towards right
From conservation of momentum and elastic transfer last bodies f and g move with speed 3m/s A moves back with speed 3 m/s . rest all will be at rest.