Third Law of Motion

What is Newton's third law of motion?

• a. Law of Inertia

• b. Law of Acceleration

• c. Law of Interaction

• d. Law of Gravitation

Newton's Third Law States...

• a. Objects in motion stay in motion and objects at rest stay at rest

• b. Force is equal to mass times acceleration

• c. For each action there is an equal and opposite reaction

• D.None of the above

A rocket pushes exhaust 10, 000 N. Without any other forces acting on the rocket, how much force does the rocket go forward?

• a. 15,000 N

• b. 1,000 N

• c. 10, 000 N

• d. 1,500N

What is the reaction force to a foot pushing down on the floor?

• a. The foot going through the floor

• b. The floor pushing back

  against the foot

• c. The floor-breaking to the foot

• d. The floor pulling back against the foot

According to Newton's Third law the strength or magnitude of forces will be...

• a. smaller

• b. larger

• c. equal

• d. huge

. A swimmer pushes on the water and the water pushes on the hand and the swimmer moves forward. What is the ACTION force?

• a. Swimmer pushes on the water

• b. the water pushes on the hand and the swimmer

  moves forward

• c. Swimmer trying to pull back on the water

• d. the water pushes on the hand and the swimmer moves backward

If you apply MORE force to the ground what happens to the ground pushing on you?

• a. The force remains the same

• b. The force decreases

• c. The force increases

• d. None of these

. What happens when two objects, such as a baseball and a bat, collide?

• a. They hit each other with the same force in the same direction.

• b. They hit each other with the same force in opposite directions.

• c. They hit each other with unequal force in opposite directions.

• d. One remains still while the other one moves in the same direction

An archer shoots an arrow. The action force is the bowstring against the arrow, the reaction force is...

• a. Air resistance against the bow

• b. the arrow's push against the bowstring

• c. the grip of the archer's hand on the bow

• d. None of the above

A baseball player bats a ball with a force of 1,000 N. The ball exerts a reaction force (without any additional forces action on it) against the bat of...

• a. Less than 1, 000 N

• b. 1,000 N

• c. More than 1,000 N

• d. 1,100N