Answered

A person walks 100m in 5
minutes, then 200m in 7
minutes and finally 50m in
4 minutes. Find their
average speed.

Answer :

Answer:
20.35m per minute
Or
1,221.43 per hour





100/5=20
200/7= 28.57
50/4= 12.5

20+28.57+12.5= 61.07

61.07/3= 20.35m per minute

Or

20.35 x 60= 1,221.43m per hour

The average speed of person is  21.87 m/s.

Given data:

The first 100 m distance is covered in 5 minutes.

Next, 200 m distance is covered in 7 minutes.

And finally, the distance of 50 m is covered in 4 minutes.

The average speed of any object is defined as the total distance covered by object in an entire journey divided by the total time taken to cover the journey. The mathematical expression for the average speed of person is,

[tex]v_{av.}=\dfrac{D_{total}}{t_{total}}\\\\\\v_{av.}=\dfrac{100 +200+50}{5+7+4}\\\\\\v_{av.}=21.87 \;\rm m/min[/tex]

Thus, we can conclude that the average speed of person is  21.87 m/min.

Learn more about the average speed here:

https://brainly.com/question/12322912

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