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kimkrak
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acceleration
 final speedinitial speed
 ___________________
 time



avg speed
 total distance
 ___________
 total time

what is velocity and how do you find it?
 the speed and direction of an object
 final speedinitial speed

what is the measure of inertia?
the tendency an object has to resist change in its motion

what does the law of conversation of momentum state
the total momentum of objects that colide is the same before and after the collision

if you 100m in 25s. later you run the same distance in less time what happened to your average speed ?
you average speed is 4m/s

the amount of matter in an object
mass

the speed of an object at one instant of time is
instintanious speed

the tendency of an object to resist change in its motion
inertia

a change in speed or direction of an object
acceleration

the measure of difficult to change the speed or direction of an object
momentum

the speed and direction of an object
velocity

the distance travled divided by the amount of time taken to travel the distance
speed

what is the momentum of a car with a mass of 500kg traveling north at 15m/3
500*15=7500kg*m/s

you travel to a city 400 km away in 3hr.what is your average speed

the speed of a train increases from 200km/hr to 300km/hr in 10min.what is acceleration?
 300200 100
 _______ = ___=10km/hr
 10 10

