Forces and Motion — Quiz
1.
What is a force?
2.
What force pulls all objects toward the center of the Earth?
3.
When two equal forces push in opposite directions, what happens to the object?
4.
Which surface would create the MOST friction?
5.
If you kick a ball harder, what happens?
6.
Name one way friction can be reduced in a machine.
7.
Why do astronauts weigh less on the Moon than on Earth?