A force F is applied on a body (which moves on a straight line) for a duration of 3s. The momentum of the body changes from 10g cm/s to 40 g cm/s. The magnitude of the force F is

A force F is applied on a body (which moves on a straight line) for a

1.	A force F is applied on a body (which moves on a straight line) for a duration of 3s. The momentum of the body changes from 10g cm/s to 40 g cm/s. The magnitude of the force F is
A.	10 dynes
B.	10 newtones
C.	120 dynes
D.	12 dynes
Answer» B. 10 newtones