Question

if action is always equal to the reaction. explain how a horse can pull a cart.​

Answer 1

Explanation:

The horse pushes backward on the ground, so the ground pushes forward with an equal

Answer 2

Explanation:

Horse pushes the ground in backward direction. In reaction to this, the horse moves forward and cart moves along with horse in forward direction.

In this case when horse tries to pull the cart in forward direction, cart pulls the horse in backward direction, but because of the unbalanced force applied by the horse, it pulls the cart in forward direction.