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.


Firstly, we have to calculate the initial momentum:

= Mass × Initial velocity


= 100 × 5


= 500 kg m/s (i)


Now, we will find the final momentum


= Mass × Final velocity


= 100 × 8


= 800 kg m/s (ii)


Now,


Force =


=


=


= 50 N


16
1