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 bodythe bigger is the friction between 2 surfaces. 2. As the mass with frog is bigger thanwithout it then the speed must be slower.