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Forces and Motion
Question | Answer |
---|---|
Gravity | is a force hat pulls everything and everybody towards earth |
Mass | the amount of matter in an object |
Weight | a measure of the force Earth's gravity has on the mas of the object or living thing. |
Air Resistance | the force of air that slows down falling objects |
Newton's 1st Law | An object at rest stays at rest and an object in motion stays in motion UNLESS acted on by an outside force |
Newton's 2nd Law | More Force= More Acceleration Less Force= Less Acceleration More Mass= Less Acceleration Less Mass= More Acceleration |
Newton's 3rd Law | For every action there is an equal and opposite reaction |
force | strength or power exerted upon an object. |
push | to use force to move (someone or something) forward or away from you |
pull | to hold onto and move (someone or something) in a particular direction and especially toward yourself |
friction | the force that causes a moving object to slow down when it is touching another object. |
motion | the action or process of moving or of changing place or position; movement |
inertia | the property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force. |
speed | the rate at which someone or something moves or travels. |
position | the place where someone or something is in relation to other people or things. |
axis | the imaginary straight line that something (such as the Earth) turns around. |
unbalanced force | are not equal, and they always cause the motion of an object to change the speed and/or direction that it is moving. |
acceleration | the rate at which the speed of a moving object changes over time |
direction | a course along which someone or something moves |
velocity | the speed of something in a given direction |
momentum | the quantity of motion of a moving body, measured as a product of its mass and velocity |
resist | withstand the action or effect of |
deceleration | reduction in speed or rate |