The speed of a bus is 72 km/hr. The distance covered by the bus in 5 seconds will be?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 100 Meter
Distance = speed × time, with both in the same units. The time is in seconds and the answer in metres, so the speed is first changed to metres per second: 1 km/hr is 1000 m in 3600 s, that is, \(\frac{5}{18}\) m/s.
Speed in metres per second: \(72\times\displaystyle\frac{5}{18}=20\) m/s
Distance in 5 seconds: \(20\times5=100\) m