question_answer

  For how much time should a force of 200 N acts on an object having mass 5 kg so as to increase its velocity from 50 m/s to 100 m/s?

Answer:

                  Given, Force, F = 200 N, Mass of an object, m = 5 kg, Initial velocity, u = 50 m/s, Final velocity, v = 100 m/s                                 (1/2) By second law of motion,                                         (1/2) The time taken is 1.25 s.                               (1)