Question

A bowling ball collides with a pin and pushes the pin toward the right. Which describes the reaction force?

The pin pushes the bowling ball toward the right.
The pin pushes the bowling ball toward the left.
The bowling ball pulls the pin toward the right.
The bowling ball pulls the pin toward the left.

Answer 1

The pin pushes the bowling ball toward the left.

By Newton's third law, if the ball exerts a rightward force on the pin, the pin exerts an equal and opposite (leftward) force on the ball.