Q 16. An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s-1 to 8 m s-1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.
The momentum is given by :
Initial momentum is :
And the final momentum is :
Also, the force is defined as rate of change of momentum.
Hence the force exerted on the body is 50 N.