1. A window washer does not want to change her position.

What does she want the forces acting on her to be?



A.
small


B.
large


C.
balanced


D.
unbalanced

2. When an object that is moving slows down, which action must be occurring?


A.
balanced forces


B.
frictional force


C.
unbalanced forces


D.
gravity

3.What do scientists measure for forces?


A.
position and size


B.
size and stability


C.
magnitude and direction


D.
strength and magnitude

4. What do scientists measure for forces?


A.
position and size


B.
size and stability


C.
magnitude and direction


D.
strength and magnitude

5. What is a force?


A.
a pull only


B.
only gravity


C.
a push or a pull


D.
balanced actions