Originally Posted by

**gbenguse78** **1. The problem statement, all variables and given/known data**

Hi

Can someone help with this problem.

2 particles of mass 30g and 40g respectively both travel at a speed of 35m/s in directions at right angles. The 2 particles collide and stick together. Calculate their speed after impact.

**2. Relevant equations**

MaVa + MbVb =(Ma + Mb)v

v= common velocity

**3. The attempt at a solution**

I am not sure how to start. Solving the total momentum before and total momentum after gives the original speed. I then resolved the respective velocities. But that means I got my final value without consideration of the masses! Finally, I resolved the masses into forces, but still didnt get anywhere. Where I am going wrong? Please advice