untitled

Newton's 3rd Law of Motion states that when an object exerts a force upon another object, the second object exerts a

• higher amount of force and in the opposite direction.

• lower amount of force and in the same direction.

• equal amount of force and in the opposite direction.

• equal amount of force and in the same direction.

Tags

NGSS.MS-PS2-1

How does the paddling motion of a swimmer help the swimmer move forward?

• As the swimmer's hands push the water backward, the water pushes forward on the swimmer.

• As the swimmer’s hands push the water backward, a current of water comes from behind and propels the swimmer.

• As the swimmer’s hands push the water backward, the water moves out of the way and lets the swimmer continue through the water

• As the swimmer’s hands push the water backward, the water keeps the swimmer floating.

Tags

NGSS.MS-PS2-1

Which statement best explains why it hurts to punch a wall:

• When your fist hits the wall, the wall is solid so it hurts your hand.

• When your fist hits the wall, the wall exerts an equal force back onto your fist.

• When your fist hits the wall, your bones all smash together.

• When your fist hits the wall, the wall vibrates.

Tags

NGSS.MS-PS2-1

If a hammer hits a nail with a force of 12 N, the nail exerts a force on the hammer of

• 2 N

• 4 N

• 12 N

• 24 N

Tags

NGSS.MS-PS2-1

A person walking on a level surface moves forward because the forces of ...

• his feet pushing forward on the ground

• his feet pushing backward on the ground, while the ground pushes forward on his feet.

• the ground pushing forward on his feet.

• the ground pushing backward on his feet, while his feet push backward on the ground.

Tags

NGSS.HS-PS2-1

When you blow up a balloon and let it go, it flies around the room. What are the action/reaction pairs?

• Action: balloon moving forward. Reaction: air coming out of the back of the balloon.

• Action: balloon moving forward. Reaction: friction with the air molecules.

• Action:air coming out of the back of the balloon.Reaction: balloon moving forward.

• Action: friction with the air molecules. Reaction: balloon moving forward.

Tags

NGSS.MS-PS2-1

What is Newton's 3rd Law of Motion?

• F=MA

• An object at rest will stay at rest, while an object in motion will remain in motion, unless acted upon by an outside force.

• Every action has an equal but opposite reaction

• Unbalanced forces will cause objects to change their motion.

Tags

NGSS.MS-PS2-1

What are the action reaction forces for a rocket?

• Action: force (fuel) being sent downward Reaction: rocket going into the air

• Action: rocket going into the air. Reaction: force (fuel) being sent downward

• Action: gravity pulling the rocket down. Reaction: fuel pushing the rocket up

• Action: fuel pushing the rocket up. Reaction: rocket fighting against air friction

A book pushes down on a table with a force of 5N, the table..

• Pushes back with a force of 5N

• Pushes back with a force less than 5N

• Pushes back with a forcec greater than 5N

• Does nothing. A table has no force.

Tags

NGSS.MS-PS2-1

According to Newton’s Third Law, when you lean on a wall, which force is greater?

• the wall's force

• your force

• the force of friction

• they are equal

Tags

NGSS.MS-PS2-1