| A | B |
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| Which of the following is the correct equation for acceleration? | final speed- initial speed/ time |
| In a graph showing speed versus time, a straight line shows the acceleration is | constant. |
| What kind of line on a distance-versus-time graph indicates that the object is accelerating? | curved |
| The energy associated with motion is called | kinetic energy. |
| Which of the following has kinetic energy? | a rolling bowling ball |
| Unlike kinetic energy, potential energy is | stored. |
| Potential energy that depends on height is called | gravitational potential energy. |
| When you rub your hands together on a cold day, you use friction to convert | mechanical energy into thermal energy. |
| In a graph of distance versus time, the slope represents | speed. |
| The rise of a line on a distance-versus-time graph is 400 km and the run is 50 hours. What is the speed of the object represented by this graph? | 8 km/h |
| Motion is measured relative to a | reference point. |
| A _________ is a place or object used for comparison to determine if something is in motion. | reference point. |
| If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same ________ | speed |
| A child riding on a merry-go-round is accelerating because his direction is | changing. |
| The SI unit of _________ is the meter per second per second | acceleration |
| A straight line on a graph of ______ means that the object has a constant acceleration. | speed-versus-time |
| The _______ energy of a book on a shelf is equal to the work done to lift the book to the shelf. | gravitational potential |
| A compressed spring has _____ energy. | elastic potential |
| A helicopter flies 100 km to the north and then flies 50 km to the east. The helicopter has traveled a total ________ of 150 km. | distance |
| is the length and direction that an object has moved from its starting point. | Displacemen |
