When things slide or roll over each other, ________ occurs.

To find the speed of an object, you need to know ______ and time.

The length of time that passes form one event to another is __________.

You can calculate acceleration by ______.

If the result of calculating acceleration is a negative number, and object is ________.

The formula for calculating force is _______.

The law that states that if no force acts on an object at rest, it will remain at rest is _________

If an object is at rest, what must happen for it to begin moving?

What is the reaction force when a hammer hits a nail?

What can you infer about this graph?

A train's average speed is 120 km per hour. Its elapsed time is 2 hours. How far did it travel?

Ms. Frye rides her bike to school. BHS is 5 miles from her home. She travels at an average rate of 16 mph. How much time does she need for this trip?

A rocket can travel at an average rate of 18,000 miles per hour. How far will the rocket travel in 4.5 hours?

The rate of chage in velocity is _____

The force of attraction between any two objects that have mass is

A change of position is ______