# 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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