Newton's Third Law + Calculating Net Force

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

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

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...

• Less than 1, 000 N
• 1,000 N
• More than 1,000 N

Tags

NGSS.MS-PS2-1

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

• 15,000 N
• 1,000 N
• 10, 000 N

Tags

NGSS.MS-PS2-1

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

• The foot going through the floor
• The floor pushing back against the foot
• The floor breaking to the foot

Tags

NGSS.MS-PS2-2

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

• smaller
• equal
• larger

Tags

NGSS.MS-PS2-1

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

• Swimmer pushes on the water

• the water pushes on the hand and the swimmer moves forward

Tags

NGSS.MS-PS2-1

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

• Swimmer pushes on the water

• the water pushes on the hand and the swimmer moves forward

Tags

NGSS.MS-PS2-1

A bowling ball hits the pins and the pins fall over. What is the ACTION force?

• Bowling ball hitting pins

• Pins falling over

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The swimmer pushes off of the wall of the pool and moves forward. What is the ACTION in this example?

• Swimmer pushes off the wall of the pool

• Swimmer moves forward

Tags

NGSS.MS-PS2-1