Question

a train length of 150m takes 10 sec to pass over another train of lenght 100 m coming from opposite direction if the speed of the 1st train is 30 kmph the speed of second train is

Answer 1

here we need to consider relative velocity concept
first convert 30kmph to mps
that is 25/3 mps
consider v as speed of train 2
velocity =distance /time
so v-(25/3)=100/10
v-25/3=10
v=25/3+10
v=18.33mps
is it right