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final#2
motion/newton's laws/body systems
| Question | Answer |
|---|---|
| define motion | is the position at which an object is placed |
| define speed | measures how fast an object is moving |
| give a measurement for speed | mph or m/s |
| define velocity | the speed at which an object travels and the direction that it travels in. |
| what is a measurement for volocity | ex:4miles/1hour west |
| what are two ways you can change an objects velocity | by accelerating or change your direction |
| what is the difference between speed and velocity | 1.speed doesn't use direction and velocity does 2.speed is not a vector and velocity is a vector |
| define acceleration | change in velocity over time |
| what is positive acceleration | when you increase your velicity |
| define negative acceleration | when you are decreasing your velocity |