The speed of a train is 75 km/h. The distance covered by the train in 6 seconds is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 125 m
The speed is in km/h and the time in seconds, so the speed is first changed into metres per second by multiplying by \(\displaystyle\frac{5}{18}\) (1 km = 1000 m, 1 h = 3600 s).
Speed \(\displaystyle =75\times\frac{5}{18}=\frac{125}{6}\) m/s
Distance in 6 seconds \(\displaystyle =\frac{125}{6}\times6=125\) m