Question

Problem 27

Answer 1

Given information

We have given that:-

The first tennis ball's mass,  
Initial velocity of the tennis ball,  
The second ball's mass,  
Initial velocity of the second ball,  

 

Step-by-step explanation

Step 1.

According to the law of conservation of momentum, the pre-collision impulse is the same as the post-collision impulse of an elastic collision, and can be given as 

 

According to the law conservation of energy, the potential energy before the collision is the same as the potential energy after the collision of the elastic collision,

 

Where,

The mass of the first ball is .
The initial velocity of the first ball is .
The mass of the second ball is .
The initial velocity of the second ball is  .
The final velocity of the first ball is .
The final velocity of the second ball is .