Question

If action is always equal to the reaction ,explane how a hrse can pull a cart ans. in points

Answer 1

Answer:

Explanation:

according to Newton's third law the statement is true.

but in your argument you must consider the fact that action reaction forces acts on two different objects.

for example in the above scenario the horse applies the force on the cart and that is why it is able to pull it and this force is the action. The reaction force is the force acting on the cart by the horse. Therefore this pair of forces act on two different objects

Answer 2

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When the horse walks in the forward direction (with the cart attached to it), it exerts a force in the backward direction on the Earth. An equal force in the opposite direction (forward direction) is applied on the horse by the Earth. This force moves the horse and the cart forward.

The velocity at which the horse can move by applying a force on the earth depends on the mass of the horse (and the cart attached to it). The heavier the cart, the slower the motion of the horse (for a given amount of force applied by the horse on the Earth). If the cart is too heavy, the force exerted by the horse on the Earth will be insufficient to even overcome the force of inertia. In this case, the horse will not be able to pull the cart.