Question

a train accelerated from 20 km per hour to 80 km per hour in 4 minutes. how much distance does it cover in this period? Assume that the tracks are straight

Answer 1

A=v-u/t

=80-20/1/15

=60*15 

=900kmph²

s=ut+at²/2

=20(1/15)+900(1/15)(1/15)/2


=4/3+2

=10/3km

hope helped!