Transcript Acceleration

Building Science Champions
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For the picture below write a paragraph on
what motion occurred to get to this exact
moment of the baseball game.
Words to use in your paragraph:
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Motion
Speed
Acceleration
Velocity
Force
Safe or out
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Describe what happens to the motion of an
object as it accelerates
Calculate the acceleration of an object and
graph changing speed and distance of an
accelerating object
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Acceleration
Linear
Nonlinear
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Acceleration - is the rate at which velocity
changes
Velocity – is speed and direction
Acceleration therefore encompasses an
increase or decrease in speed or change in
direction
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Increase in speed is referred to as
acceleration or positive acceleration
– a runner starting a race would be positive
acceleration
Decrease in speed is referred to as negative
acceleration – a car slowing down would be
negative acceleration
A change in direction – a car changing lanes
would be a change in direction therefore a
change in acceleration
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To calculate acceleration you must know the
velocity during different periods of time
Acceleration = final velocity – initial velocity
divided by time
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Formula to calculate acceleration:
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SEE ELMO
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Graphs are used to analyze the motion of an
object
A straight line reflects constant acceleration
A curved line reflects a change in acceleration
A straight line shows a linear relationship – as
each unit of time increase the distance
increases by the same amount in each unit of
time
A curved line is nonlinear – as each init of
time increase the distance does not increase
by the same amount in each unit of time
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Acceleration is a change in velocity
Three types of acceleration – increase in
speed, decrease in speed, or change in
direction
Acceleration is easily shown on a graph
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Anderson, M. et all (2012) Physical Science.
McGraw-Hill: Columbus
Frank, D.V et al (2001). Physical Science.
Prentice Hall: New Jersey