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QUIZ

8th

grade

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Rachel Alldaffer

4 years

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15 questions

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- 1. Multiple Choice3 minutes1 pt1. Which of the following statements about speed and velocity is correct?Velocity only describes an object’s rate of motion.Speed describes how an object is changing its velocity.Speed and velocity both describe how an object is speeding up.Only velocity includes the direction an object is traveling.
- 2. Multiple Choice2 minutes12 ptsAvery likes to walk 30 feet in 10 seconds. What is her speed?3 feet/sec6 feet/sec10 feet/sec2 feet/sec
- 3. Multiple Choice45 seconds1 pt65mi/hr South is an example of...SpeedVelocityAccelerationDirection
- 4. Multiple Choice3 minutes1 pt
Find the velocity of a plane that traveled 3000 miles west in 5 hours.

65 mph

600 mph

600 mph west

600 mph

- 5. Multiple Choice3 minutes1 ptDescribe the speed of the object from 4-6 seconds using the distance vs. time graph.Increasing speedDecreasing speedNot movingConstant speed
- 6. Multiple Choice1 minute1 pt
A stopped car begins moving and reaches a speed of 25m/s in 5 seconds. What is its acceleration?

+25m/s

^{2}-0m/s

^{2}+5m/s

^{2}5m/s

- 7. Multiple Choice1 minute1 pt
A helicopter flies west 200 miles in 2 hours. What is its velocity?

99 mph

100 mph south

400 mph south

297 mph south

- 8. Multiple Choice30 seconds1 ptIf you travel 7.5 km and walk for 1.5 h, what is your average speed?5 km/h11.25 km/h0.2 km/h
- 9. Multiple Choice30 seconds1 ptYou are riding your bike at 9 km/h. Ten minutes later, your speed is 6 km/h.Acceleration occurred because speed increased.Acceleration occurred because speed decreased.Acceleration occurred because you changed directions.
- 10. Multiple Choice30 seconds1 pt
What two things must you know to determine speed?

distance and direction

direction and time

speed and direction

time and distance

- 11. Multiple Choice30 seconds1 pt
What is your acceleration if you are riding your bike at 9 km/hr, and 10 minutes later your speed is 6 km/hr.

0.3 km/hr

30 km/hr

0.3 km/hr/hr

300 km/hr

- 12. Multiple Choice30 seconds1 pt
Which of the following is an example of potential energy?

A glass jar sitting on a shelf

A flag waving in the wind

A ball rolling along the sidewalk

A battery powering a radio

- 13. Multiple Choice30 seconds12 pts
At what speed would a car have to move in order to travel 20 kilometers in 2 hours.

5 km/hr

10 km/hr

20 km/hr

40 km/hr

- 14. Multiple Choice30 seconds1 pt
The location on the track where the train has the greatest potential energy is....

1

2

3

4

- 15. Multiple Choice30 seconds1 pt
Which of the following is an example of kinetic energy?

A baseball moving from the pitcher to the catcher

A rock sitting on top of a large hill

A pendulum at the top of it's swing

A new flashlight battery

- Answer choicesTagsAnswer choicesTags
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