A train starting from a railway station and moving with uniform acceleration attains a speed `40 km//h` in `10` minutes. Find its acceleration.

Explanation

Initial velocity, u = 0
Final velocity, `v=72kmh^(-1)=72xx5/18`
= `20ms^(-1)`
Acceleration, `a=(v-u)/t=(20-0)/10=2ms^(-2)`