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physics
vocab
Question | Answer |
---|---|
force | A push or pull that can change the motion of an object. |
balanced forces | Separate forces on an object that combined do not change the movement of the object. |
unbalanced forces | Forces on an object that cause change in the motion of the object. |
net force | the sum of all the forces acting on an object. |
at rest | The state of an object when it is not in motion. |
motion | The change in an object’s position with respect to time and in comparison to the position of other objects used as reference points. |
speed | The change in an object’s position with respect to time and in comparison to the position of other objects used as reference points. |
direction | A straight path that an object can move along. |
friction | Force that opposes the motion of one surface across another. |
frame of reference | A system that uses axes or background objects to measure the position or movement of an object. |
velocity | Measurement of speed and direction of an object. |
acceleration | Measurement of speed and direction of an object. |