Question

a cyclist travelled hundred in 2 seconds what is his speed in kilometre per hour​

Answer 1

Answer: 7.2 km/hour

Explanation: Cyclist travelled distance = 100 m

1 km = 1000 m

1 m = 1/1000 km

100 m = 1/1000 × 100 = 1/10 km

Time = 50 seconds

1 hr = 60 minutes and 1 minute = 60 seconds

So, 1 hr = 60×60 seconds = 3600 seconds

1 second = 1/3600 hr

50 seconds = 50/3600 hr = 1/ 72 hr

Speed = distance / time

Speed =( 1/10 km) / (1/72 hr)

= 7.2 km/hr

Answer 2

Answer:

answer

50

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