The mass of an object is 100 kg and it is accelerated uniformly from a velocity of 8 ms-1 to 12 ms-1 in 8 s. Calculate the initial momentum of the object. Also, find the magnitude of the force exerted on the object.
1
600 kg ms-1, 200 N
2
600 kg ms-1, 80 N
3
800 kg ms-1, 50 N
4
400 kg ms-1, 30 N