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If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:

  • A.Velocity
  • B.Momentum
  • C.Acceleration
  • D.Kinetic energy

Answer: B

Both acquire the same momentum.

By the impulse-momentum theorem \(Ft = \Delta p\), so equal forces acting for equal times give equal changes in momentum whatever the masses. Their velocities, accelerations and kinetic energies all differ.

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