Question

Try to move your father's scooter. Does it require force to move? Once it has started moving, do you find it easy to push it further. If yes, why?

Answer 1

1. Yes, it requires force to move my father's scooter
2. As one can experience that they have to push or pull the scooter in order to make it move so it is concluded that one needs to apply force to achieve the same.
3. Yes, I find it easy to push the scooter further after it is set in motion.
4. In the process of making the scooter attain motion, there will be static friction which is in action.
5. After the scooter started to move there will be rolling friction.
6. Rolling friction is less than static friction.
7. Hence we have to exert less amount of force in order to keep the scooter moving.