Q. The kinetic energy acquired by a mass (m) in traveling distance starting from rest under the action of constant force is directly proportional to ?

  • (A) 1/m
  • (B) m°
  • (C) m
  • (D) 1/m²
βœ… Correct Answer: (B) m°
Explanation: Work done by external forces = Change in kinetic energy Since particle starts from rest, its initial Kinetic Energy is 0. Therefore, K.E.=Fd It is given that force is constant. We see that Kinetic energy is independent of mass
Explanation by: Uday Singh
Work done by external forces = Change in kinetic energy Since particle starts from rest, its initial Kinetic Energy is 0. Therefore, K.E.=Fd It is given that force is constant. We see that Kinetic energy is independent of mass

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