Question

7 kilogram object collides with a stationary 3 kg object and after collision they stick together and move forward with velocity 4 m /sec. what is the velocity with which the 10 kilogram object hits second one.....?

Answer 1

Answer:

Explanation: velocity 4m/s is found by: 7-3 so if you want to find Velocity for 10kg You need to do 10-3

The answer is 7m/s

I hope u have understood it