Question

A train accelerates from 0.54km/h to 0.72km/h in 10 seconds. Its acceleration is what?

Answer 1

Its acceleration is 

$$a=\frac{v_f-v_i}{t}$$

$$a=\frac{0.72-0.54}{3.6\cdot10}=0.005\frac{m}{s^2}$$