# Physical Science: Motion, Forces, and Energy, Book M

## Section 1: What is motion?

### Self-Check Quiz-Eng.

 1. Something is in motion if it __________. Need a Hint? A) changes position B) changes state C) changes properties D) changes distance 2. Movement occurs when an object moves relative to a __________. Need a Hint? A) reference point B) stationary object C) moving object D) different object 3. Displacement measures the _________ between the starting and stopping points. Need a Hint? A) mass and volume B) distance and direction C) distance and speed D) direction and speed 4. __________ is distance divided by time. Need a Hint? A) Speed B) Displacement C) Velocity D) Acceleration 5. An object that travels 100 m in 20 s has what speed? Need a Hint? A) 200 m/s B) 5 m/s C) 2 000 m/s D) 50 m/s 6. The __________ measures the speed during an entire trip. Need a Hint? A) instantaneous speed B) acceleration C) average speed D) overall speed 7. At the beginning of a track race, the instantaneous speed of all runners is __________. Need a Hint? A) different B) unable to be measured C) the average speed D) 0 m/s 8. When you graph speed, time is on the __________. Need a Hint? A) y-axis B) vertical axis C) x-axis D) z-axis 9. When a car goes around a curve at 20 mph, the __________ changes. Need a Hint? A) speed B) average speed C) instantaneous speed D) velocity