Question

A train travels 270 km in 3 hours. Express the speed of

the train in m/s
(Hints: 270 km = ? m, 3h = ? min = ? s)
25 m/s
270000
10.800
m/s

Answer 1

25 m/s

Explanation:

We need to convert units, so we use these conversions:

1 km = 1000 m

1 h = 60 mn

1 mn = 60 s

1 h = 60 mn × (60 s)/mn = 3600 s

`(270~km)/(3~h) * (1000~m)/(km) * (h)/(3600~s) =`

`= 25~(m)/(s)`