A body of mass 2 kg moving on a horizontal surface with an
initial velocity of 4 m/sec comes to rest after 2 sec. If one
wants to keep this body moving on the same surface with a
velocity of 4 m/sec, the force required is
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Explanation:
The force required by the body is 4N. Time taken to stop t = 2 s. According to Newton's second law, the force is directly proportional to the 'mass of the body' and acceleration exerted by the body. ... So, the body require a force of 4N to keep it moving
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