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force and motion
vocab
Term | Definition |
---|---|
force | a push or pull |
motion | a change in position of an object |
net force | finding total amount of force acting on am object |
speed | distance divided by time |
velocity | speed with direction |
momentum | the power of a moving object |
acceleration | the change in velocity |
newton's 1st law of motion | object resting/moving will continue to rest/move until an force changes it |
newton's 2nd law of motion | the acceleration of an object depends on its mass and the force needed |
newton's 3rd law of motion | when one object exerts a force on another, the other object exerts an equal and opposite force back on it |
accelerometer | tool that uses newton's 1st law to show change in velocity |
spring scale | tool used to measure any force, unit is N |
opposing forces | forces that work in opposite directions |