Question

an electric train is moving with a velocity of 120 km per hour how much distance will it move in 30 seconds

Answer 1

First we have to convert 120km/h into m/s

So 120km/h x 5/18 = 100/3 m/s

It means, in 1sec displacement covered is 100/3

For 30s, it will be 100/3 x 30 = 1000m = 1km

Answer 2

@
velocity =120km/h = (120×5/18)m/s = 100/3 m/s
Time = 30 sec
displacement = ?
displacement = velocity * time
displacement = 100/3 * 30
displacement = 1000metre
displacement = 1 km
@:-)