Question

a car is moving at a speed of 78 km/h. What time will it take to cover 650 metre?ans 30 seconds ​

Answer 1

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