Give two examples each of situations in which you push or pull to change the state of motion of objects.

Explanation

(i) If a rubber ball or marble is placed on a very smooth surface and given a small push, it start moving with some speed. If we keep an obstacle in the way of motion of the marble ball, the marble will stop moving at the obstacle. Here a push is given to the marble ball at rest to change its state of rest to motion.
(ii)If a child is placed on a hanging swing in the state of rest and the swing is pulled again and again by a rope, the swing will move to and fro with a speed. If the pull is bigger, the swing will move with bigger distance. This is an example of a pull which changed the state of rest to motion.