Question

When a horse pulls a wagon. the force that causes the horse to move forward is the force:
A). the ground exerts on it
B). it exerts on the ground
C). me wagon exerts on it
D). it exerts on the wagon

Answer 1

Hint: In physics, a force is any interaction that, while unopposed, causes an object to change its velocity. A force can cause a mass item to change its velocity, which includes starting to move from a standstill, or accelerating.

Complete step-by-step solution:
If object A exerts a force on object B, object B must respond with a force of equal magnitude and in the opposite direction.
This law reflects nature's symmetry: forces always exist in pairs, and one body cannot exert a force on another without experiencing one. This law is sometimes referred to as action-reaction, with the action being the force exerted and the reaction being the force received as a result.
When a horse pulls a wagon, the ground is pushed backwards by the horse. The ground exerts a forward force of equal magnitude due to the third law of motion. The waggon moves forward because the backward force applied by the vehicle is less than the force applied by the horse.
So, The correct answer is option C.

Note: Everyday life is full of examples of Newton's third law of motion. When you leap, for example, your legs exert a force on the ground, and the earth responds with an equal and opposite reaction force, propelling you into the air. When developing rockets and other projectile devices, engineers use Newton's third law.