Question

A ball with a mass of `5 kg` moving at `1 m/s` hits a still ball with a mass of `12 kg`. If the first ball stops moving, how fast is the second ball moving?

Answer 1

`v_2~=0,417 m/s`

Explanation:

`"use the conversation of momentum"`
`"total momentum before collision=total momentum after collision"`
`"momentum of an object is given as P=m.v"`
`5*1+0=0+12*v_2`
`5=12*v_2`
`v_2=5/12`
`v_2~=0,417 m/s`