Acceleration Review
Acceleration
- the time rate of change in velocity
| Uniform Acceleration? |
- constant change
in velocity per unit time
Which data shows uniform acceleration? Why?
|
|
Left Data Shows Constant Acceleration
a = ?
a = 2 m/s2
Constant Acceleration?
Yes!
| Every 2 seconds the object gains exactly 15 m/s |
Use a =
∆V/∆t
to find the acceleration
a = 7.5 m/s2
Slope of a V vs. t plot
tells us about the objects ...
... acceleration
Slope = ∆y/∆x
= ∆V/∆t
= a
Acceleration is ...
Zero
Velocity is ...
Constant
|
Describe Acceleration, Velocity
Velocity is Decreasing,
Acceleration
is
a = ∆V/∆t
(15 m/s - 45 m/s )
= -5 m/s2
Describe acceleration and velocity Velocity (m/s)
|
Acceleration is increasing
Velocity is increasing
Describe the Velocity, Acceleration
Velocity is increasing
Acceleration is constant & Positive
Velocity? Acceleration?
Velocity is decreasing
Acceleration is constant & negative
Analyzing Motion Plots
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