A horse pulls a cart along a flat road. Consider the following four forces that arise in this situation.
(1) the force of the horse pulling on the cart
(2) the force of the cart pulling on the horse
(3) the force of the horse pushing on the road
(4) the force of the road pushing on the horse
-Which two forces form an "action-reaction" pair that obeys Newton's third law?
A)1 and 4
B)1 and 3
C)2 and 4
D)3 and 4
E)2 and 3

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The Answer of A horse pulls a cart along a flat road. Consider the following four forces that arise in this situation.
(1) the force of the horse pulling on the cart
(2) the force of the cart pulling on the horse
(3) the force of the horse pushing on the road
(4) the force of the road pushing on the horse
-Which two forces form an "action-reaction" pair that obeys Newton's third law?
A)1 and 4
B)1 and 3
C)2 and 4
D)3 and 4
E)2 and 3

A Horse Pulls a Cart Along a Flat Road