1. Motion Graphs, kinematics - 2
Consider more complicated motion (kinematics) graphs such as those for a thrown ball and for a bouncing ball.

2. The gradient of a displacement-time graph is = velocity.
The gradient of a velocity-time graph is = acceleration.
time
displacement
time
velocity

3. The area under a velocity-time graph is = displacement.
constant acceleration
is a flat line.
time
acceleration
time
velocity Dt

4. What would the curves look like for a ball thrown upwards?+ +
velocity
acceleration
Slope = 0
Slope = constant & negative
displacement
time
time
velocity = 0
Slope = +
Slope = -
time
- 9.8 ms-2 - -

5. What would the curves look like for a bouncing ball?
time
displacement +
What would the curves look like for a bouncing ball?
time
velocity + - x x x
Velocity is zero at top & bottom of bounce

6. time
velocity + - x x x
time
acceleration + -