physics help plzzzz?

Question

A child causes a wagon to accelerate by pulling it with a horizontal force. Newton's third law says that the wagon exerts an equal and opposite force on the child. How can the wagon accelerate?

Answer 1

The opposite forces don't cancel each other. The force applied by the child on the wagon will equal that of the wagon on the child, but the forces remain nonetheless!

The resultant force on the wagon makes it accelerate.

Answer 2

hello........
the force on which it exerts an equal force is frictional force..........which is far less when compared with muscular force.so thereby it acc.........