Describe what would happen if while wearing rollerskates you pushed as hard as you could against a wall. Why does this happen?

If you push as hard as you can against a wall while wearing roller-skates, you will exert a force on the wall but since the wall cannot move, an equal and opposite reaction force will push you in the opposite direction. This is due to Newton's third law of motion, stating that for every action, there is an equal and opposite reaction. As a result, you will be pushed backward away from the wall.