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Q.

What is the average speed of a Cheetah that sprints 100m in 4 seconds? What if it sprints 50m in 2 seconds?


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a

 25m/s, 25m/s

b

20m/s, 30m/s

c

45m/s, 40m/s

d

55m/s, 60m/s 

answer is A.

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Detailed Solution

Concept: The distance that an object travels in one second is its average speed. The whole length of the path it has traveled is its distance. Calculate the ratio of the cheetah's total distance traveled to its entire time traveled to determine its average speed.
The entire distance an object has traveled in a unit of time can be used to calculate its average speed. Mathematically, this may be expressed as
vavg=dt
vavgThe body's average speed is equal to the sum of its journey distance and time.
Cheetah travels 100 meters in 4 seconds in this scenario. Consequently, the cheetah's typical speed is
vavg=1004m/s
=25m/s
Cheetah's average speed is if it sprints 50 m in 2 seconds.
vavg=502m/s
=25m/s
Hence, the correct option is 1.
 
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