Question

Two boys on skates push off from each other. The 40 kg boy moves to the left at 10 m/s. If the other boy moves to the right at 8 m/s, what is his mass?

Answer 1

solutions:

-50kg

-32kg

-2kg

its 50 kg because as a result of being more heavy the force that is applied to him don't makes hi go as fast as the other one