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# Chapter 1

### motion science

accelerate rate at which the velocity changes
acceleration includes rate of slowing down, speeding up, going backwards and turning
Acceleration formula final velocity-starting velocity time it takes to change velocity
Acceleration is expressed as (m/s/s)
increase in speed positive acceleration
decrease in speed deceleration
Motion is calculated by using a reference point
speed is the distance traveled and how long it took you to get there
speed average formula total distance total time
velocity the rate of an object going in a certain direction
velocity always includes change in direction
circular acceleration is called centripetal acceleration
scientists use newton's to measure force
force doesn't always cause something to move
Force means to push or pull
net force the result of combining all the forces put on an object
net force formula larger net force- smaller net force =the final direction
Unbalanced forces cause
objects can move when unbalanced forces are removed
friction a force that opposes motion of two touching surfaces
friction is increased by rougher surfaces
turning an object into a different position does not effect the amount of friction
Sliding friction friction caused by two surfaces sliding past each other
Rolling friction wheels on another surface
fluid friction opposes movement through fluids
static friction opposes motion
lubricants used to reduce friction
gravity attraction of two or more objects
law of gravity crated by newton
gravity force increases mass increases
gravity decreases distance
weight measurement of gravity
mass measurement of matter
Created by: avery degroh

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