Newton's 3rd Law Quiz

A student pulls a 60-newton sled with a force having a magnitude of 20 newtons. What is the magnitude of the force that the sled exerts on the student?

• 20 N

• 40 N

• 60 N

• 80 N

A 400-newton girl standing on a dock exerts a force of 100 newtons on a 10,000-newton sailboat as she pushes it away from the dock. How much force does the sailboat exert on the girl?

• 25 N

• 100 N

• 400 N

• 10,000 N

A carpenter hits a nail with a hammer. Compared to the magnitude of the force the hammer exerts on the nail, the magnitude of the force the nail exerts on the hammer during contact is

• less

• greater

• the same

A woman is pushing a baby stroller. Compared to the magnitude of the force exerted on the stroller by the woman, the magnitude of the force exerted on the woman by the stroller is

• zero

• smaller, but greater than zero

• larger

• the same

A baseball bat exerts a force of magnitude F on a ball. If the mass of the bat is three times the mass of the ball, the magnitude of the force of the ball on the bat is

• F

• 2F

• 3F

• F/3