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Science
7th -
8thgrade
Calculating velocity, kinetic energy, and potential energy
25 questions
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- 1. Multiple ChoiceWhat two measurements are necessary for calculating speed?Mass and timeTemperature and massMass and distanceDistance and time
- 2. Multiple ChoiceCan be measured in seconds (s)DistanceTimeSpeedAcceleration
- 3. Multiple ChoiceCan be measured in meters (m)DistanceTimeSpeedAcceleration
- 4. Multiple Choice
What is the formula to calculate speed?
s = t/d
s = d/t
s = d x t
s= t x d
- 5. Multiple ChoiceCan be measured in meters per second (m/s)DistanceTimeSpeedAcceleration
- 6. Multiple Choice
Calculate the speed of the runner represented by the DOTTED line in Graph A.
2.5 yd/sec
5 yd/sec
2.5 sec
4 sec
- 7. Multiple Choice
Calculate the speed of the runner represented by the SOLID line in Graph A.
2.5 yd/sec
5 yd/sec
2.5 sec
4 sec
- 8. Multiple Choice
Calculate the speed of the runner represented by the SOLID line in Graph B.
2.5 yd/sec
5 yd/sec
30 yd
4 sec
- 9. Multiple Choice
Calculate the speed of the runner represented by the DOTTED line in Graph B.
2.5 yd/sec
5 yd/sec
7.5 yd/sec
4 sec
- 10. Multiple Choice
Calculate the speed of the runner represented by the DOTTED line in Graph C.
2.5 yd/sec
5 yd/sec
10 yd/sec
4 sec
- 11. Multiple Choice
Calculate the speed of the runner represented by the SOLID line in Graph C.
10 yd/sec
5 yd/sec
7.5 yd/sec
4 sec
- 12. Multiple Choice
Calculate the speed of the runner represented by the SOLID line in Graph D.
2.5 yd/sec
5 yd/sec
7.5 yd/sec
4 sec
- 13. Multiple Choice
Calculate the speed of the runner represented by the DOTTED line in Graph D.
2.5 yd/sec
5 yd/sec
7.5 yd/sec
4 sec
- 14. Multiple Choice
In which of the following graphs are both runners moving at the SAME speed?
Graph A
Graph B
Graph C
Graph D
- 15. Multiple Choice
Which of the graphs shows that one of runners started 10 yards further ahead of the other?
Graph A
Graph B
Graph C
Graph D
- 16. Multiple ChoiceWhich runner won the race?ABC
- 17. Multiple ChoiceWhich runner had a head start?ABC
- 18. Multiple ChoiceAt what time did runner A pass runner B?0 seconds1 second2 seconds3 seconds
- 19. Multiple Choice100 km/hr is an example ofspeedvelocity
- 20. Multiple Choice
2,560 m/s WEST is an example of
speed
velocity
- 21. Multiple Choice
A cheetah can run briefly with a speed of 31 m/s. Suppose a cheetah with a mass of 47 kg runs at this speed. What is the cheetah’s kinetic energy?
1457 J
728.5 J
45,167 J
22,583.5 J
- 22. Multiple Choice
A ping pong ball has a mass of about 0.0245 kg. Suppose that ball is hit across the table with a speed of about 4.0 m/s. What is its kinetic energy?
19.6 J
0.0196 J
4.9 J
0.0049 J
- 23. Multiple Choice
What is the kinetic energy of a 26 kg eagle, flying at an altitude of 65 m at a speed of 19 m/s?
32,110 J
16,055 J
4693 J
247 J
- 24. Multiple Choice
A polar bear has an average mass of 500 kg. If its maximum kinetic energy is 60500 J, what is its top speed?
242 m/s
121 m/s
15.56 m/s
15,125,000 m/s
- 25. Multiple Choice
An airplane designed to carry a space shuttle has a top speed of 236 m/s, at which its kinetic energy is 9,760,000,000 J. What is its mass?
175,237 kg
41,355,932 kg
87618.5 kg
350,474 kg
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