Law of Conservation of Momentum

 

In any collision or interaction between two or more objects in an isolated system, the total momentum before collision is equal to the total momentum after collision.

 

Example:

 

Consider two bodies A and B of mass m1 and m2 moving in the same direction with velocity U1 and U2 respectively such that U1 is greater than U2. Suppose the ball acquire velocity V1 and V2 respectively after collision.

 

Momentum of the system before collision = m1U1 + m2U2

Momentum of the system after collision = m1V1 + m2V2

 

 

According to the law of conservation of momentum:

 

Total momentum of the system before collision = Total momentum of the system after collision

 

m1U1 + m2U2 = m1V1 + m2V2

 

I am often asked how to read more. The answer is: spend more time reading. There is no other way. As you devote more time to books, you will begin to read faster. But how do you find this time to read? We find time for what is priority for us. If you think you have no time to read at all, then you must find a compromise. Now I have already read 94 books per year (and this is not counting the many works that I decided not to finish reading).