AP Physics- 1D Kinematics

Motion is a change of an object’s position or orientation with time.

Trajectory is the path upon which an object moves

A change of position is called a displacement.
Displacement: DeltaX=Xfinal-Xintial

Scalar values have no direction, while vector values have direction.
(Ex scalar-Weight, Vector-velocity)

Speed=Distance/Time

Velocity=Displacement/Time

Position vs Time Graphs

• Slope of this graph represents velocity

Uniform Motion: an object moving a constant velocity (straight position vs. time graph)

• Displacement=v(deltaT)

Displacement is equal to the area under a Velocity vs Time graph

Instantaneous Velocity: an object’s velocity at an exact point of time, shown by drawing a tangent line.

Acceleration: The rate of change of the velocity (in other words, the rate of change of the rate of change) (it is how hard and which direction something is getting pushed)
It is slope of a velocity vs time graph
Acceleration: Change in Velocity/Time (m/s/s)

1st Kinematic Equation: V=(Velocity initial)+at

Second Kinematic Equation: Displacement=1/2(Velocity inital+final)t

Third Kinematic Equation: Displacement=(Initial V)t+(1/2)at²

4th Kinematic Equation: (final V)²=(Initial Velo)²+2a(displacement)

Change in Acceleration/Change in Time=Jerk

Overall good luck, this test should be good!