Calculating Speed: Question Preview (ID: 12012)

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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) 4 meters
b) 5 meters
c) 6 meters
d) 8 meters

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) Yes, it can have reached the fort.
b) No, it will need a speed of 20 meters per second to reach the fort.
c) No, it will need a speed of 25 meters per second to reach the fort.
d) No, it will need a speed of 50 meters per second to reach the fort.

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) 1.75 seconds
b) 2.5 seconds
c) 3.45 seconds
d) 4.3 seconds

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) 13 seconds
b) 14 seconds
c) 15 seconds
d) 16 seconds

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) 19 seconds
c) 190 seconds
d) 1900 seconds

How quickly can a cheetah, running 27 meters per second, reach a zebra approximately 108 meters ahead of it?
a) 2 seconds
b) 3.5 seconds
c) 4 seconds
d) 4.5 seconds

A startled kangaroo can cross a distance of 60 meters in only four seconds. What is the speed of the kangaroo?
a) 4m/s
b) 12.5m/s
c) 15 m/s
d) 60 m/s

A driver looks at her dashboard and reads that she is traveling at 100 km per hour. What does this measurement represent?
a) time
b) distance
c) average speed
d) instantaneous speed

The formula for average speed can best be written as
a) S=t/d
b) S=d/t
c) S= instantaneous speed/time
d) Speed= d X t

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 X Speed= time
d) Distance traveled = Speed X Time

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