6.4-8th grade

1.

10 points

Newton's first two laws explain how __________ acting on a single object affect its motion.

2.

10 points

According to the __________ law of motion, forces always act in equal but opposite pairs.

3.

10 points

This often is restated--for every _______, there is an equal but opposite reaction.

4.

10 points

Newton's third law means that when you lift your book bag, your book bag _______ back.

5.

10 points

The door exerts an equal ________ back on you.

6.

10 points

The force you exert on Earth is the same as the force _______ exerts on you.

7.

10 points

This force causes a _______ variation in the Sun's motion.

8.

10 points

The laws of ________ describe how an object moves when forces act on it.

9.

10 points

First, you push down on the __________.

10.

10 points

As the first law predicts, you __________ at rest.