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# ch.4: Accleration

### accelerated motion in a straight line vocabulary.

acceleration the rate of change in the speed of an object.
delta "the change in"
constant accleration speed that changes by the same amount every second
uniform accleration another word for constant acceleration
slope rise: amount the speed changes / run: amount the time changes
term piece of an equation
initial speed first term of the formula is the speed the object starts with
free fall moving under the influence of gravity only
acceleration due to gravity symbol: (g)equation: 9.8m/sec2
time of flight object takes the same time going up as it takes coming down
friction when air resists the motion of objects moving through it
air resistance when small objects at low speeds is neglected by air
terminal speed maximum speed at which an object falls when limited by air friction
acceleration equation accelertaion= change in speed/ chang in time= meters per second/second=meters/ second X second=m/sec2
Popular Physics sets

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