Question

state and prove newton law of conservation of momentum

Answer 1

hey friend ...........

here is your answer ............

what is Newton's second law -- Newton's second law. The second law states that the rate of change of momentum of a body is directly proportional to the force applied, and this change in momentum takes place in the direction of the applied force. ... In other words, if a body is accelerating, then there is a force on it.

how to prove it -- by the equation F=ma

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Answer 2

Here is your answer,

LAW OF CONSERVATION OF MOMENTUM

if no external force acts on a system of several particles, then the total linear momentum of the system remains constant.

Consider two bodies A and B of masses M1 and M2 moving with velocities U1 and U2. After sometime they collide each other. After collision, let V1 and V2 is their velocities.

Force exerted by A on B,
= M2 (v2-u2) the whole divided by Δt

Force exerted by B on A,
= m1 (v1-u1) the whole divided by Δt

According to Newton's Law,
F1=-F2

m2(v2-u2)÷Δt = -m1(v1-u1)÷Δt
m2v2-m2U2 = -m1v1+m1u1
m2v2+m1v1= m1u1+m2u2
m1u1+m2u2 = m1v1+m2v2.

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