ANSWER:

CONDITION

A. A boy leaning against the wall.

B. A boy jumping off the diving board.

C. Hammering the head into the wood.

D. A man walking on the floor.

E. A boy bouncing a ball.

FORCE OF ACTION

A. the force exerted by the boy on the wall.

B. the force exerted by the feet on the diving board.

C. the force exerted by the hammer on the nail.

D. The force exerted by the foot on the floor.

E. the force exerted by the hand on the ball.

FORCE OF REACTION

A. the force exerted by the wall on the boy.

B. the force exerted by the diving board on the feet.

C. the force exerted by the nail on the hammer.

D. the force exerted by the floor on the foot.

E. the force exerted by the ball on the hand.