Kinematics 2

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# Kinematics 2 - PowerPoint PPT Presentation

Kinematics 2. Average and Instantaneous Velocity 2-2, 2-3. Speed. Speed is a scalar. No direction. Your car does not have a velocitometer . It does not tell you direction. Your car’s speedometer indicates the speed only.

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## PowerPoint Slideshow about 'Kinematics 2' - duff

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Presentation Transcript

### Kinematics 2

Average and Instantaneous Velocity

2-2, 2-3

Speed
• Speed is a scalar.
• No direction.
• Your car does not have a velocitometer. It does not tell you direction.
• Your car’s speedometer indicates the speed only.
• In physics, we must be very precise when using the terms speed and velocity.
Velocity
• Vector
• Speed plus direction
• Speed is the magnitude of the velocity vector
• Can be positive or negative to indicate the direction
Instantaneous Velocity
• The “average” velocity over an infinitesimally short period of time.