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# Phy Sci U1

### newtons first law, interia, and motion

distance how far you have traveled between two positions. It is always positive. It is a scalar quantity.
displacement change in position. It is the straight line distance between your starting position and ending position. It is equal to Final position minus initial position. It can be positive or negative. It is a vector quantity.
scalor quantity that only requires magnitude (how big)
vector quantity that requires both magnitude (how big) and directions
speed how fast something is moving. It is equal to distance divided by time. It is a scalar quantity
velocity rate at which position changes. It is equal to displacement divided by time. It is a vector quantity
Newtonâ€™s First Law AKA the law of inertia. An object at rest will stay at rest and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force
Mass a measure of the amount of matter an object contains. Also, a measure of the amount of inertia an object has.
Inertia the resistance an object has to changes in its motion.
Force any push or pull (interaction) that can cause a change in motion.
Created by: makenna1