A body of mass 5 kg is moving with a momentum of 10 kg m s - 1 . Now a force of 2 N acts on the body in the direction of its motion for 5 s . The increase in the Kinetic energy of the body is _____ J .

Step-by-step solution

The formula to calculate the change on momentum of the object is given by p f - p i = ∫ F d t       . . . 1 Substitute the values of the known parameters into equation (1) and solve to calculate the final momentum of the object. p f - 10   kg   m   s - 1 = 2   N × 5   s ⇒ p f = 10 + 10   kg   m   s - 1 =   20   kg   m   s - 1 The formula to calculate increase in kinetic energy ∆ K of the particle is given by ∆ K