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If a Sprinter Runs a Distance of 100 Metres in 9.83 Seconds, Calculate His Average Speed in Km/H. - Science

Short Note
Sum

If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km/h.

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Solution

Distance (d) = 100 m
Time (t) = 9.83 s
So, we can calculate the speed as :
`"Average speed" = "Total distance travelled"/"Time"`

Average speed for the entire journey : 

= `100/9.83`

= 10.173 m/s

Now , we can convert it in km/h as : 

= `((10.173)(3600))/1000`

= 36.62 km/hr

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APPEARS IN

Lakhmir Singh Science Class 9 Physics
Chapter 1 Motion
Short Answers | Q 29 | Page 21
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