9-3: Newton's Third Law

Newton's Third Law states

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

• Force is equal to mass times acceleration

• For each action there is an equal and opposite reaction

Tags

NGSS.MS-PS2-1

Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude (size), but in the opposite direction to that of the first object.

• Always True

• Never True

• Sometime True

Tags

NGSS.MS-PS2-1

Force always comes in

• waves

• pairs

• triplets

Tags

NGSS.MS-PS2-1

If you sit in a chair, the only force acting on you is gravity

• True

• False

Tags

NGSS.MS-PS2-4

While driving down the road, a firefly strikes the windshield of a bus and makes a quite obvious mess in front of the face of the driver. The firefly hit the bus and the bus hits the firefly. Which of the two forces is greater: the force on the firefly or the force on the bus?

• Firefly

• Bus

• Equal Forces

Tags

NGSS.MS-PS2-1

When you push on a wall, the wall pushes on you.

• True

• False

Tags

NGSS.MS-PS2-1

If you push on a wall with a force of 30 N, the force acting on you from the wall is which of the following?

• 0 N

• 10 N

• 20 N

• 30 N

Tags

NGSS.MS-PS2-1

When a bowling ball strikes a pin, which experiences a greater acceleration?

• the bowling ball because it is more massive

• the pin because it is less massive

• the both experience the same amount of acceleration

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When a bowling ball strikes a pin, which imparts a greater force on the other?

• the bowling ball

• the pins

• both exert the same amount of force on each other

Tags

NGSS.MS-PS2-1

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

• Air resistance against the bow

• the arrow's push against the bowstring

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

Tags

NGSS.MS-PS2-1