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Question

When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by
  1. the cart on the horse
  2. the ground on the cart
  3. the ground on the horse
  4. the horse on the ground

A
the ground on the horse
B
the horse on the ground
C
the cart on the horse
D
the ground on the cart
Solution
Verified by Toppr

As the horse exerts some force on the ground, the ground gives some reaction force to the horse. This reaction force causes motion of horse.

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