Newtons 3rd Law

A baseball player hits a ball with 400 N of force. How much force does the ball exert on the bat?

• 300

• 400

• 500

• Not enough info to tell

Tags

NGSS.MS-PS2-1

Your friend pushes you for making fun of him/her. What is the reaction force?

• You pushing back on your friend

• You pushing on the ground

• There is no reaction force

• Your friend pushing on the ground

Tags

NGSS.MS-PS2-1

When you jump up, you push the earth downwards. Why can't you tell that the earth has moved?

• The force of you jumping up doesn't actually push the earth down.

• The earth has much more mass so it doesn't move at all

• The earth is firmly rooted

• The earth has much more mass so you can't tell that it moved

Tags

NGSS.MS-PS2-1

In space, rockets move by shooting air backwards. What moves faster the air or the ship?

• Neither, they both move at the same speed

• The ship because it has more mass

• The air because it has less mass

• The ship because it is moving forwards

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

When you hit a tennis ball with a racket...

• The ball exerts more force on the racket

• The ball and racket exert the same force on each other

• The racket exerts more force on the ball

• It depends on how hard you hit it

Tags

NGSS.MS-PS2-1

Two students with different masses are sitting in roll-y chairs. The lighter one uses his feet to push the other

• The lighter student will move faster because he has less mass

• The heavier student will move more because he is being pushed

• They will move with the same speed

• The heavier student shouldn't move at all

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What causes a jet ski to move forward?

• The motor pushes the jet ski forward

• The water pushes the jet ski forward

• The person pushes the jet ski forward

• Gravity pushes the jet ski forward

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Why is it easier to stand up if you push something down?

• The thing you push down pushes you up

• Your arms push your body up

• It helps your legs get proper posture

• It actually doesn't help, its just a mental thing

Tags

NGSS.MS-PS2-1

When wearing socks, why is it easier to walk on carpet than a smooth hard floor?

• There is more friction on the hard floor

• The soft carpet feels better on your feet

• There is more friction on the carpet

• The hard floor pushes against you harder

A small bug splats against a car windshield. Which object experiences greater force?

• The bug

• The windshield

• Both experience the same force

• Not enough info given

Tags

NGSS.MS-PS2-1