click below
click below
Normal Size Small Size show me how
Force & Motion Unit
Force and Motion Unit
Question | Answer |
---|---|
What information is needed to determine the average velocity of an object | direction, and speed |
Speed | how fast an object is moving over distance/time |
Velocity | the rate at which an object changes position, over displacement/time. |
Displacement | an object’s change in position and includes information about distance and direction |
Newton’s First Law of Motion | bodies at rest tend to remain at rest and bodies in motion tend to remain in (straight-line) motion unless acted upon by another force. |
Factors affecting gravitational pull | Mass of both objects and distance between objects |
Newton’s Third Law of Motion | every action has an equal and opposite reaction |
average acceleration | a = Δv/Δt, or change in velocity divided by change in time |
force | F= ma or mass times acceleration |
1 Newton equals | 1kg m/s^2 |
weight | force on the object due to gravity. |
Balanced Forces | all forces have an equal force opposite it |
total force | sum of all forces acting on an object, motion always occurs in the direction of the total force. |
average speed formula | s = Δd/Δt, or change in distance divided by change in time |
Total displacement | Straight line from beginning position to final position must include direction of travel (when solving always draw a diagramand draw a straight line from beginning to end of travel) NOT THE DISTACE OF THE PATH |