a car is moving at a speed of 78 km/h. What time will it take to cover 650 metre?ans 30 seconds
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Step-by-step explanation:
An hour has 60 minutes.
A minute has 60 seconds
Therefore, an hour has 60*60 seconds = 3600 secs.
1 km is 1000 metres.
130 km is 130,000 metres.
So 130 km/h is 130,000 metres in 3600 seconds = 1300 metres in 36 seconds = 650 metres in 18 seconds = 325 metres in 9 seconds = 36.11111 in 1 second.
In 20 seconds you will have travelled 20*36.111 = 72.2222 metres
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