Question

1. If action is always equal to the
reaction, explain how a horse can
pull a cart.

Answer 1

here is you answer

According to Newton's third law of motion, action force is equal to reaction but acts on two different bodies and in opposite directions. When a horse pushes the ground, the ground reacts and exerts a force on the horse in the forward direction. This force is able to overcome friction force of the cart and it moves.

Answer 2

Answer:

Explanation: this is because the action and reaction force act on two different bodies and thus cannot cancel each other,

also, The horse pushing on the ground will be pushed back by the ground, so if the horse can push the ground with a greater force than the cart's resistance it can move the cart