NEWTON”S THIRC LAW:for every action there is an equal and opposite reaction.
Examples:
1. Swimming. A swimmer pushes the water backwards (action).The water pushes the swimmer forward(reaction) with the same force.Hence the swimmer swims
2. Firing from a gun. When a gun is fired, the bullet moves forward (action).The gun recoils backwards (reaction)
3. Flight of jet planes and rockets.The burnt fuel which appears in the form of hot and highly compressed gases escapes through the nozzle (action) in the backward direction. The escaping gases push the jet plane or rocket forward (reaction)with the same force.Hence the jet or rocket moves.
4. Rebounding of a rubber ball. When a rubber ball is struck against a wall or floor, it exerts a force on wall (action).The ball rebonds with an equal force (reaction) exerted by the wall or floor on the ball.
5. It is difficult to walk on sand or ice. This is because on pushing sand gets displaced and reaction from sandy ground is very little.In case of ice, force of reaction is again small,because friction between our feet and ice is very little.