A force of magnitude 25 N acting on a body of mass 2 kg increases its kinetic energy from 100 J to 200 J. The displacement of the body during this interval is
According to work-energy theorem, work done by the force would be equal to the change in kinetic energy of the body. The change in kinetic energy is equal to 100 J and we know that:
Work done = Force×Displacement
Therefore, 100 = 25×Displacement
. So, from here we have displacement = 4 m.