Frage | Antworten |
force | Force is a push or pull; it gives energy to an object causing it to change its position, start/stop moving or change directions. Force has no direction. |
motion | a change in a position in a certain amount of time |
friction | a force that acts in a direction opposite to the motion of a moving object |
speed | the rate at which an object move |
stationary | still, not moving |
frame of reference | the object that is used for comparison to calculate speed |
sliding friction | dragging a book over a desk |
rolling friction | wheels |
fluid friction | liquids/gasses and air resistance |
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