Mention the action and reaction forces in the following examples.
1.A ball rebounds after striking against a floor.
2. A boatman pushes the river bank with a bamboo pole to take his boat into the river.
3. Swimming of a person in a pool.
4. A person jumping out of a boat.
5. Horse pulling a cart.
Answers
The action and reaction forces are mentioned in the following cases as follows:
1.A ball rebounds after striking against a floor-
The ball exerts a force on the floor( action) and the floor exerts a force( reaction) which is equal and opposite. As a result of this, the ball rebounds.
2. A boatman pushes the river bank with a bamboo pole to take his boat into the river-
The boatman exerts a force on the river( action) with the pole and the river bank provides an equal and opposite force( reaction) on the pole. This helps in moving the boat forward in water.
3. Swimming of a person in a pool-
The swimmer pushes against the water in the pool( action) and the water pushes back or exerts a force( reaction) on the swimmer and helps her to move forward in water.
4. A person jumping out of a boat-
The person exerts a force(action) on the boat, this makes the boat move backwards. The boat also applies a force(reaction) on the man, thus helping in jumping out of the boat.
5. Horse pulling a cart-
The horse gives a push on the ground in the backward direction( action) and the ground in turn exerts a force on the horse in the forward direction( reaction). This helps the cart to move.
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