Question

A .2 kg baseball is pitched with a velocity of 40 m/s and is then batted to the pitcher with a velocity of 60 m/s. What is the magnitude of change in the ball's momentum?

Answer 1

`Delta p = "4 " kg*m*s^(-1)`

Explanation:

`p_i = "0.2"*"40 " kg*m*s^(-1)`
`rArr p_i = "8 " kg*m*s^(-1)`

`p_f = "0.2"*"60 " kg*m*s^(-1)`
`rArr p_f = "12 " kg*m*s^(-1)`

`rArr Deltap = "4 " kg*m*s^(-1)`