Question

A 20 kg mass is moving at 10 m/s and collides with a stationary 5 kg mass, transferring all its momentum in the collision, what will the velocity ( in m/s) be for the 5 kg ball after they collide?

Answer 1

v = 40 [m/s].

Step-by-step explanation:

Linear momentum is defined as the product of mass by Velocity. In this way, by means of the following equation, we can calculate the momentum.

`P=m*v\\`

where:

m = mass [kg]

v = velocity [m/s]

`P =20*10\\P =200 [kg*m/s]`

Since all momentum is transferred, we can say that this momentum is equal for the mass of 5 [kg]. In this way, we can determine the speed after the impact.

`v = P/m\\v = 200/5\\v = 40 [m/s]`