Answer to Question #6502 in Mechanics | Relativity for Browe
Freddy Frog drops vertically from a tree onto a horizontally moving skateboard. The skateboard slows. Give two reasons for this, one in terms of a horizontal friction force between Freddy’s feet and the skateboard, and one in terms of momentum conservation.
1. The larger is the mass of the body the bigger is the friction between 2 surfaces. 2. As the mass with frog is bigger than without it then the speed must be slower.