Review for Quiz 18 - speed, velocity, acceleration, and SI

Something is considered to be in motion when its ____________ changes based upon a _____________.

• position, reference point
• object, motion

Speed is a ________; it uses a unit of time.

• time
• rate
• obstacle

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Which ARE examples of acceleration? Choose ALL that apply!

• A horse adds a burst of speed and wins the race
• A ship travels at a constant speed as it crosses the Atlantic Ocean.
• A car goes around a curve.
• A train travels at a constant speed of 60 km per hour during a sight-seeing tour up a mountainside.
• A tractor-trailer hits the brakes at a stop light.

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What does "SI" mean?

• Strong Individual
• The International System of Units
• Scientific Investigation

What is another name for "SI" units?

• imperial units
• metric units
• american units

Speed in a direction is:

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Any change in velocity is:

Distance traveled over time is:

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A car travels 400 kilometers in 4 hours. What is its speed?

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The world record for 1000 m is about 2 minutes 12 seconds! (Remember 60 seconds in a minute.) What was their speed in m/s?

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