A horse pulls a cart with force
.As a result of this force the cart accelerates with constant acceleration.The magnitude of the force that the cart exerts on the horse
A)is zero newtons.
B)equal to the magnitude of .
C)less than the magnitude of .
D)greater than the magnitude of .
E)cannot be determined without knowing the mass of the horse.

Question

A horse pulls a cart with force 
.As a result of this force the cart accelerates with constant acceleration.The magnitude of the force that the cart exerts on the horse
A)is zero newtons. 
B)equal to the magnitude of . 
C)less than the magnitude of . 
D)greater than the magnitude of . 
E)cannot be determined without knowing the mass of the horse.

Quizplus · Accepted Answer

According to Newton's Third Law, for every action there is an equal and opposite reaction. In this case, the horse is exerting a force on the cart, and so the cart must be exerting an equal and opposite force on the horse. Therefore, the magnitude of the force that the cart exerts on the horse must be the same as the magnitude of the force that the horse exerts on the cart, which is 11ea6c4e_0022_c939_9875_b53dea9dc538_TB6214_11 .

A Horse Pulls a Cart with Force