Question

Ek rail gadi ki lambi 100 miter hai or 90 km/h ki raftar s wha ek platform ko 20 second m par krti h toh platform ki lambai bataiye

Answer 1

as we know

distance = speed . time

distance = 90 km / h multiply 20

firstly convert 90 to m/s

90 (5/18 )

= 25 m /s

now

distance = 25 multiply 20

= 500 m length

length of train = 100 metre

length of plarform = 100 + 500 = 600