Question

state and prove the law of conservatism of momentum for 5marks​

Answer 1

Explanation:

Law Of Conservation Of Momentum State that total Momentum Of System remain conserved in the absence of external Force

Proof :-

Consider a body Of Mass M1 moving with velocity U1 , striking against another body of mass M2 moving with velocity U2

Let the two bodies remain in contact with each other for a small interval " delta t "

Let F12 be the average force exerted by mass M1 or M2 and let F21 be the force on M2 due to M1

Let V1 and V2 be the velocity of two body after collision

Momentum of mass M2 after

collision = M1 U1

Momentum of mass M2 after

collision = M2 U2

Momentum of mass M1 after

collision = M1V1

Some information

By using definition of impulse change in momentum of mass M1