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1D Kinematics: Position, Velocity & Acceleration
AP Physics 1 · Unit 1: Kinematics
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t
0.00 s
x
0.00 m
v
0.00 m/s
a
0.00 m/s²
POSITION x(t)
VELOCITY v(t)
ACCELERATION a(t)
Initial Position x₀ (m)
0.0 m
Initial Velocity v₀ (m/s)
8.0 m/s
Acceleration a (m/s²)
-2.0 m/s²
Time Range (s)
10 s
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Uniform
Deceleration
Reversal
Free-Fall
📝 Quick Quiz
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1. An object has v₀ = 6 m/s and a = −2 m/s². At what time does it reverse direction?
t = 2 s
t = 3 s
t = 6 s
It never reverses
2. On an x-t graph, a parabola opening downward indicates:
Constant velocity
Positive acceleration
Negative (constant) acceleration
Zero acceleration
3. If the acceleration is zero and v₀ = 5 m/s, what does the x-t graph look like?
Horizontal line
Straight line with positive slope
Downward parabola
Upward parabola
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