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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
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reference point |
the starting point you choose to describe the location or position of an object |
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position |
*is an object's distance and direction from a reference point *includes a distance, direction and a reference point |
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motion |
is the process of changing position |
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displacement |
difference between the initial position and the final position of an object |
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speed |
measure of the distance an object travels per unit of time |
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constant speed |
rate of change of position in which the same distance is traveled each second |
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instantaneous speed |
speed at a specific instant in time |
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average speed |
total distance traveled divided by the total time taken to travel that distance
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v = d/t answer is in m/s |
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velocity |
speed and the direction of a moving object |
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acceleration |
measure of the change in velocity during a period of time
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a = vf - vi ÷ t answer in m/s² |
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average acceleration |
change in velocity divided by the time during which the velocity changes |
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vertical |
overhead; y-axis on a graph |
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distance |
the total length of a path |
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contact force |
a push or pull applied by one object to another object this is touching it. |
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non-contact force |
a force that pushes or pulls an object without touching it |
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friction |
a contact force that resists the sliding motion between two objects that are touching. |
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gravity |
a non-contact attractive force that exist between all objects that have mass |
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combine |
to bring together |
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balanced forces |
forces acting on an object that combine and make a net force of 0 |
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inertia |
the tendency of an object to resist a change in motion |
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satelite |
any small object that orbits a larger object that is not a star |
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1st law |
an object in motion tends to stay in motion and while an object at rest tends to stay at rest |
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2nd law |
the acceleration of an object is equal to the net force exerted on the object divided by the objects mass |
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3rd law |
for every action there is an equal and opposite reaction |
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