acceleration is defined as the rate of change of velocityeration
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acceleration equation
acceleration (m/s)2 = change in velocity (m/s) divided by time taken (s)
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simple acceleration equation to remember
a = V-U divided by T
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what does A stand for ?
acceleration in (m/s)2
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what does V stand for ?
final velocity (m/s)
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what does U stand for ?
initial velocity (m/s)
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what does T stand for ?
time taken (s)
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is acceleration scalar or vector?
acceeration is a vector quantity meaning both size and direction are important
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positive direction
the direction the object is usually moving in is positive
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acceleration in a positive direction
if the acceleration is positive the car will get faster
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acceleration in a negative direction
if the acceleration is negative the car will slow down
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other equation used for acceleration
v2 - u2 = 2 x a x X
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what does this mean?
(final velocity)2 - (initial velocity)2 = 2 x acceleration x distance travelled
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how to work out which equation to apply in an exam question
when answering Q's you need to workout which equation to use. In the second equation there is distance travelled in the equation instead of time taken.
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Other cards in this set
Card 2
Front
acceleration equation
Back
acceleration (m/s)2 = change in velocity (m/s) divided by time taken (s)
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