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Q.

Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 50 seconds. What is Joseph’s average speed from A to B?


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a

2.35 m/s

b

3.12 m/s

c

1 m/s

d

1.76 m/s  

answer is D.

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Detailed Solution

Joseph’s average speed from A to B is 1.76 m/s
Given: Distance from A to B =300 m, displacement from A to B = 300 m, Time taken = 2 minutes and 50 seconds = 2×60+50
= 170 s
Formula: Average speed = distancetime
Putting all the values we get,
S = 300170
or, Average speed = 1.76 m/s
 
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