Question

a train starting from a railway station and moving with uniform acceleration attains a speed 40km/h in ten minutes. find it's acceleration

Answer 1

acceleration=4 per minute because 40 divided by 1p is equal to 4

Answer 2

u=0m/s
v=40km/hr=11.1m/s
t=10 min= 600s
acceleration= v-u/t
=11.1/600m/s²
Or in km
acceleration=40/10
=4