Law of Interaction

Newton's third law states that any action will have a(n) _______ and ______ reaction

• Equal and similar
• Equal and opposite
• Equal and different
• Greater and opposite

Tags

NGSS.MS-PS2-1

You hit a wall with a stick.  The equal but opposite reaction is _____

• the wall pushes against you
• the stick pushes against you
• you push against the stick
• the wall pushes against the stick

Tags

NGSS.MS-PS2-1

Which best explains why we are able to accelerate forward when starting to run?

• As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.
• No acceleration takes place. Runners are always at a fixed velocity.
• The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
• The runner's upper body quickly leans forward, causing the entire body to begin accelerating forward

Tags

NGSS.MS-PS2-1

According to Newton's 3rd Law, an action and reaction are equal in____.

• magnitude

• direction

• weight

• mass

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-PS2-1

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 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.HS-PS2-1

If you apply MORE force to the ground what happens to the force of the ground pushing on you?

• The force remains the same

• The force increases

• The force decreases

Tags

NGSS.MS-PS2-1

If the gymnast decreases the force it exerts on the trampoline, what will the reaction be?

• The gymnast will be pushed back by the trampoline with more force and go higher into the air

• The gymnast will be pushed back by the trampoline with less force and not go as high into the air

• No change will happen to the gymnast

Which statement about action-reaction force pairs is incorrect?

• They act on the same object.

• They occur at the same time.

• They always occur in pairs.

• They are equal and opposite.

Tags

NGSS.MS-PS2-1