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Calculating Speed
Test Description: Answer the review questions.
Instructions: Answer all questions to get your test result.
1) A driver looks at her dashboard and reads that she is traveling at 100 km per hour. What does this measurement represent?
A
instantaneous speed
B
distance
C
time
D
average speed
2) The formula for average speed can best be written as
A
S= instantaneous speed/time
B
S=d/t
C
Speed= d X t
D
S=t/d
3) A startled kangaroo can cross a distance of 60 meters in only four seconds. What is the speed of the kangaroo?
A
60 m/s
B
12.5m/s
C
4m/s
D
15 m/s
4) Light can travel at a speed of 300,000 km/s. Approximately how long will it take light to go from Earth to Mars if the distance
A
1.9 seconds
B
190 seconds
C
1900 seconds
D
19 seconds
5) How quickly can a cheetah, running 27 meters per second, reach a zebra approximately 108 meters ahead of it?
A
4 seconds
B
4.5 seconds
C
2 seconds
D
3.5 seconds
6) A balloon rises into the sky at a speed of 4 meters per second. How long will it take the balloon to reach a bird flying 52 meters high?
A
16 seconds
B
13 seconds
C
15 seconds
D
14 seconds
7) A bluefin tuna can reach speeds of up to 22m/s. Suppose one tuna falls behind the rest of the school by a distance of 55 meters. How quickly can the tuna catch up?
A
2.5 seconds
B
1.75 seconds
C
4.3 seconds
D
3.45 seconds
8) A snowball flies with a speed of 15 m/s. It's in the air 5 seconds then hits the ground. Can it reach a fort 50 meters away?
A
No, it will need a speed of 50 meters per second to reach the fort.
B
No, it will need a speed of 25 meters per second to reach the fort.
C
No, it will need a speed of 20 meters per second to reach the fort.
D
Yes, it can have reached the fort.
9) A grasshopper jumps with a speed of 3 m/s from a leaf. It flies through the air for 2 seconds before landing on a fence. How far is the leaf from the fence?
A
5 meters
B
8 meters
C
6 meters
D
4 meters
10) If speed is equal to distance traveled divided by time which of the following formulas for distance is correct?
A
Distance traveled= time/speed
B
Distance traveled= speed/time
C
Distance traveled = Speed X Time
D
Distance traveled X Speed= time
*select an answer for all questions
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