Newton's 3rd Law Flashcard

Front

What is Newton's 3rd Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What are action and reaction forces?

Back

Action and reaction forces are pairs of forces that are equal in size, but opposite in direction, acting on two different objects.

Front

If you step off a curb, what are the action and reaction forces?

Back

Action: Earth pulls you down; Reaction: You pull Earth up.

Front

In the context of an archer shooting an arrow, what is the action force?

Back

The bowstring pushing against the arrow.

Front

In the context of an archer shooting an arrow, what is the reaction force?

Back

The arrow pushing against the bowstring.

Front

Why do two skaters have different speeds after pushing off each other?

Back

Because they have different masses.

Front

If you push on your friend with 1000 N of force, how much force does your friend push back on you?

Back

Equal to 1000 N.

Front

What does Newton's 2nd Law state?

Back

The acceleration of an object depends on the net force acting on it and its mass.

Front

What is the formula for Newton's 2nd Law?

Back

F = ma (Force equals mass times acceleration).

Front

How does mass affect acceleration according to Newton's 2nd Law?

Back

Greater mass results in less acceleration for the same amount of force applied.