11 3 acceleration section
Post on 18-May-2015
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Acceleration 11-3
Acceleration =
A change in speed (Velocity) or direction in an amount of time
Speed 2 - Speed1 / tV2 – V1 / t
Acceleration
Units = m / s2
Units =
meters / second /second
Change in speed Formula
Change in speed = Final Speed – Initial Speed
Change in speed = 10 m/sec - 4 m/secChange in speed = 6 m/sec
Slow down—is accelerating
Acceleration is speeding up
Slowing down is called Deceleration or Negative Acceleration
Constant Acceleration =
A steady change in velocityThe velocity changes by the
same amount each second
Positive Acceleration Graph
Increase at a constant rate = straight line
Slope of line = acceleration
Negative Acceleration Graph
Decrease at a constant rate = straight line sloping downward
Slope is negative (Down)
Distance-Time Graph
Nonlinear graph
Curve connects the data points
that are plotted
Constant High Speed
Constant Low Speed
Varying Speed
Not Moving
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