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Laxmikum
@Laxmikum
May 2021
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if a sprinter runs a distance of 100m in 9.83sec, calculate his speed in km/h.
Answers & Comments
shrikant7
Distance=100m = 0.1 km
Time=9.83 second= 0.0027 hours
Speed = Distance/time
speed= 0.1/0.0027
speed = 1/0.027
speed = 37.03 km/hr
1 votes
Thanks 1
Laxmikum
wrong
shrikant7
Then what is the answer
Laxmikum
its answer is 36.62 km/h
Laxmikum
but thx
shrikant7
Calculation mistake
Rehman11
Using s=vt , v=s/t ....(1)
now, v = 100m/9.8sec = 0.1km /9.8 divided by 3600hr.
solving it comes to v= 36.734 ~ 37 km/hr
2 votes
Thanks 2
Laxmikum
wrong
Rehman11
I got 36.73 using 9.8 value & not 9.836 . similarly if you put 9.863 value you'll get 36.62 as expected
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Answers & Comments
Time=9.83 second= 0.0027 hours
Speed = Distance/time
speed= 0.1/0.0027
speed = 1/0.027
speed = 37.03 km/hr
now, v = 100m/9.8sec = 0.1km /9.8 divided by 3600hr.
solving it comes to v= 36.734 ~ 37 km/hr