Question

Please help would appreciate

Answer 1

Answer:

Explanation:

First we'll write both their masses and then u and v

Secondly, we'll use the formula: $m_{1} u_{1} + m_{2} u_{2} = m_{1} v_{1} + m_{2} v_{2}$

So by this method we'll get the answer,..

I am getting the answer as 1.4m/s