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Middle School Physical Science: Motion - Speed and Velocity
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Avg score: 71% Most missed: “Which choice(s) could represent the velocity of a moving car?”
Speed is ignorant of direction. On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.  Like other vectors, velocity can be represented by an arrow. The length of the arrow represents speed, and the way the arrow points represents direction.  If two objects are moving at the same speed and in the same direction, they have the same velocity. If two objects are moving at the same speed but in different directions, they have different velocities. If two objects are moving in the same direction but at different speeds, they... Show more
Middle School Physical Science: Motion - Speed and Velocity
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7 Questions

1. Which quantity is a vector?
2. When calculating average speed, the symbol dd represents the
3. If you run a 100-meter race in 20 seconds, what is your average speed during the race?
4. If speed is constant, velocity
5. If you use an arrow to represent velocity, what does the length of the arrow represent?
6. Which choice(s) could represent the velocity of a moving car?
7. Tony ran at a constant speed of 10 m/s for a total of 60 seconds. How far did he run?