2nd Six Weeks Exam

What's Newton's 1st Law?

• Always eat fig"Newtons"
• Object in motion stays in motion
• Acceleration is produced when a force acts on a mass.
• For every action there is an equal and opposite re-action

The scientific unit of acceleration is m/s.

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A speed that does not change is called average speed.

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The slope of a speed vs time graph is equal to acceleration.

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Speed and velocity are calculated by the same mathematical equation.

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The rate at which velocity changes per unit time is called acceleration.

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When graphing motion, time is plotted on the y axis.

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Speed is ____. 

• a measure of how fast something is moving
• the distance covered per unit time
• always measured in terms of a unit of distance divided by a unit of time
• all of the above

One possible unit of speed is _____.

• miles per hour
• kilometers per hour
• light years per century
• all of the above

When you look at the speedometer in a moving car, you can see the car's _____.

• instantaneous speed
• average speed
• instantaneous acceleration
• all of the above