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## Answers

Distance = 100m

Time taken = 9.83 sec

Now, avg. speed = total distance/total time taken

therefore, avg. speed= 100/9.83

avg. speed= 10.17m/s

changing into km/hr

avg. speed=(speed in m/s) x (5/18)

therefore avg. speed= 10.17x 5/18

avg speed in km/hr= 2.825 km/hr

**Distance = 100 m**

**Time = 9.83 sec**

**Average speed = Total distance/Total time taken**

**= 100/9.83 = 10000/983 = 10.172**

**To convert it to km/hour we need to multiply it by 18/5,**

**Hence, average speed in km/hour = (10.172 × 18)/5 = 183.096 ÷ 5 = 36.6192 km/h**

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