Name: 
 

12.2 Quiz



Modified True/False
Indicate whether the statement is true or false.  If false, change the identified word or phrase to make the statement true.
 

 1. 

A car moving around a corner at 25 miles per hour has a constant velocity. _________________________

 

 2. 

An airplane moving at 200 kilometers per hour west and a plane moving at 200 miles per hour east have the same velocity. _________________________

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 3. 

The distance an object travels divided by the time to travel that distance is called:
a.
displacement.
b.
acceleration.
c.
speed.
d.
position.
 

 4. 

During the Kentucky Derby, a race horse covering the same distance on the race track for each second it runs is traveling with constant:
a.
position.
b.
speed.
c.
acceleration.
d.
coordinates.
 

 5. 

The quantity that measures the change in position with time in a certain direction is:
a.
speed.
b.
acceleration.
c.
velocity.
d.
dimension.
 

 6. 

In the phrase “meters per second”, the word per can mean all of the following EXCEPT:
a.
multiplied by.
b.
for every.
c.
divided by.
d.
for each.
 

 7. 

All of the following are units for speed EXCEPT:
a.
meters per second.
b.
kilometers per hour.
c.
seconds per second.
d.
feet per minute.
 

 8. 

The relationship that allows you to solve for average speed is:
a.
distance + time
b.
time ´ distance
c.
distance mc008-1-122.jpg time
d.
time mc008-2-122.jpg distance
 

 9. 

To solve for the distance an object travels, the formula that should be used is distance =
a.
speed ´ time
b.
speed + time
c.
speed mc009-1-122.jpg time
d.
time mc009-2.jpg speed
 

 10. 

A relationship that can be used to solve for the time it takes for a bird to fly between two trees is:
a.
speed ´ distance
b.
speed + distance
c.
speed mc010-1-122.jpg distance
d.
distance mc010-2.jpg speed
 

 11. 

Tanya coasts down the street on her bicycle at a constant speed of 15 meters per second for 20 seconds. The distance she travels is:
a.
0.75 m
b.
1.3 m
c.
35 m
d.
300 m
 

 12. 

A supersonic airplane flow 5,800 kilometers from Paris, France to New York City at 3,600 kilometers per hour. The time needed to make the trip was about:

mc012-1-122.jpg
a.
0.62 hours
b.
1.6 hours
c.
2.2 hours
d.
3.0 hours
 

 13. 

A cheetah, one of the fastest animals on Earth, travels 80 meters in 3.0 seconds. The average speed of the cheetah is about:

mc013-1-122.jpg
a.
27 m/s
b.
77 m/s
c.
83 m/s
d.
240 m/s
 

 14. 

Two cars are moving with the same speed. The velocity of both cars will be the same if the cars are moving in:
a.
circles.
b.
parallel paths.
c.
straight lines.
d.
the same direction.
 

 15. 

A car going in a circle can not have constant velocity because:
a.
its speed is constantly changing.
b.
its direction is constantly changing.
c.
its speed is not changing.
d.
its direction is not changing.
 

 16. 

Tom, a cyclist, rides his bicycle for an hour at 40 km/hr. For the next three hours he rides at 20 km/hr. During the last two hours of his ride he travels at 22 km/hr. Tom’s average speed for his ride is about:
a.
20 km/hr
b.
22 km/hr
c.
24 km/hr
d.
27 km/hr
 

Completion
Complete each statement.
 
 
Select the correct term to complete each sentence. There are extra terms in the list.

peraverageconstant
speedvelocitycoordinates
distancedirectionposition
originnumber linescenter
 

 17. 

A race car traveling the same distance each second would be described as traveling at ____________________ speed.
 

 

 18. 

____________________ is calculated by dividing distance by time.
 

 

 19. 

The word meaning “for every”, “for each” or “divided by” in statements of speed or velocity is ____________________.
 

 

 20. 

The ____________________ of an object must be described by both the direction and the speed of the object.
 

 

 21. 

From a stop sign, Charise accelerates to a speed of 60 km/hr.

co021-1.jpg

She travels 4 miles in 6 minutes before slowing to a stop at a traffic light. The speed calculated by dividing the distance Charise travels by the time needed to travel all four miles is called the ____________________ speed.
 

 

Short Answer
 

 22. 

Write the equation that can be used for calculating the average speed of a moving object.
Use v to represent speed, d to represent distance and t to represent time.
 

 23. 

Name 3 units for indicating speed.
 

 24. 

Explain the difference between speed and velocity. In the explanation, use the words distance, time and direction.
 

 25. 

Explain why a car going around a curve at a constant speed of 35 mph does not have a constant velocity.
 

Problem
 

 26. 

An airplane flies 650 kilometers east, turns and flies 250 kilometers west. Calculate the position of the airplane compared to its point of origin. State both a distance and direction in your answer.
 

 27. 

Calculate the distance covered by a Canadian goose flying for 6 hours at 45 miles per hour. Show your work, including an equation, substitution in the equation with units, and an answer labeled with units.
 

 28. 

When the starter’s gun is fired, a sprinter takes 49.0 seconds to run 400 meters. Calculate the average speed of the runner. For full credit, you must write a proper equation, substitute in the equation with units, and give an answer with units.
 



 
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