A body undergoes acceleration when there is a change in its state of motion.
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Transcript of A body undergoes acceleration when there is a change in its state of motion.
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NEWTON’S 2ND LAW OF MOTION
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ACCELERATION= CHANGE IN VELOCITY/ TIME
A body undergoes acceleration when there is a change in its state of motion
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ACCELERATION PRACTICE PROBLEMS1. In .5 seconds a projectile goes from 0-
300m/s. What is the acceleration of the projectile?
2. The space shuttle releases a telescope into orbit around the earth. The telescope goes from being stationary to traveling at a speed of 1700 m/s in 25 seconds. What is the acceleration of the satellite?
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ACCELERATION KEY1. 600 m/s2
2. 1700/ 25 = 68 m/s2
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GRAPHING VELOCITY
Velocity vs. Time Graphs
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GRAPHING ACCELERATION
At Rest
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GRAPHING ACCELERATION
Constant Velocity
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GRAPHING VELOCITY
Acceleration= Increasing Velocity
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GRAPHING ACCELERATION
Negative Acceleration= Decreasing Velocity
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FORCE CAUSES ACCELERATION
Acceleration is directly proportional to net
(or unbalanced) force.
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FORCE AND ACCELERATION LAB
How do mass and force affect the acceleration of an object?
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DIRECTLY PROPORTIONAL MEANS:
As one thing gets bigger so does the
other!
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MASS IS:The amount of matter in an object
The measure of the inertia (laziness) of an object
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MASS IS NOT:Volume: how much space it takes up
Weight: a measure of the force of gravity
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NEWTON’S 2ND LAW OF MOTION
F = force
m = mass
a = acceleration
SI Units of Newtons (N)
SI Units of Kilograms (kg)
SI Units of m/s2
F=ma
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MYTHBUSTERS:
KILLER KLEENEX BOX
Video Segment 1
http://player.discoveryeducation.com/index.cfm?guidAssetId=264EDD12-290D-4CA3-8CCC-09BB92440DA5&blnFromSearch=1&productcode=US
Video Segment 2
http://player.discoveryeducation.com/index.cfm?guidAssetId=C63410E3-67DD-4C11-9B37-B0104F331363&blnFromSearch=1&productcode=US
Video Segment 3
http://player.discoveryeducation.com/index.cfm?guidAssetId=DABCA218-A64A-427B-BA24-6BA1A0B764C5&blnFromSearch=1&productcode=US
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WATER BALLOON EXAMPLE
Force and Acceleration Interactions
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CAR CRASH EXAMPLE
Force and Acceleration Interactions