Question

A 40m long train passes over a bridge of 200m long at a speed of 36km/h. How long will it take to pass completely over the bridge?

Answer 1

GIVEN:
TIME=?
DISTANCE =200m
SPEED =36km/hr =10m/s
Now some logic: IMAGINE NOW THAT A TRAIN IS GONNA PASS THE BRIDGE. IT WILL COVER DISTANCE 200m . NOW THE TIP OF THE TTAIN WILL PASS THE BRIDGE BUT ITS COMPARTMENTS STILL BE PASSING THE BRIDGE AND SINCE THE Train IS 40m LONG.. TOTAL DISTANCE WILL BECOME BECOME 200m+40m=240m.
NOW BY FORMULA OF SPEED I. E
SPEED IS EQUAL TO DISTANCE OVER TYM.
WE GET
10=240/TIME
TIME=240/10=24seconds.
IF UNDERSTOOD MARK IT BRAINLIST.