Motion Graphs, kinematics - 2

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Presentation transcript:

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

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

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

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 - -

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

time velocity + - x x x time acceleration + -