Question

A 200m long train Crosses a 400 long bridge with a speed of 36km h-¹ . calculate the time taken by the train to cross the bridge​

Answer 1

Answer:

60 seconds

Explanation:

Velocity = 36 km/hr = 36 * (5/18) = 10 m/s

Total distance travelled to cross the bridge = 200 + 400 = 600 m.

We know that :

Time = Distance/Speed

        = 600/10

       = 60 seconds

Hope it helps!

Answer 2

$\red{ \underline{ \underline{ \bf{}Answer}}} \\ \\ \tt\purple\mapsto \purple{Time = 6 \: sec = 1 \: min} \\ \\ \bf {\pink {\underline{\orange{Given}}}} \\ \\ \tt \rightsquigarrow Train \: length =200 \: m \\ \\ \tt \rightsquigarrow Bridge \: length = 400 \: km/ h \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:\:\: \:= \tt 10 \: m/s \\ \\ \bf {\pink{\underline{\blue{To \: Find}}}} \\ \\ \tt{ \rightsquigarrow Time \: taken \: by \: the \: train = \: ?} \\ \\ \bf {\pink{ \underline{\green{Solution}}}} \\ \\ \sf{Total \: Distance \: Travelled \: Yo \: cross \: The \: Bridge} \\ \\ \sf{ \implies 200 \: m + 400m} \\ \\ \sf{ \implies 600 \: m } \\ \\ \sf{\implies Speed = \frac{Sistance}{Time} } \\ \\ \sf{ \implies Time = \frac{Distance}{Speed} } \\ \\ \sf{ \implies \frac{ 600}{10} } \\ \\ \sf{ \purple{\implies \underline{ \boxed {\text{Time = 6 \: sec = 1 \: min}}}}}$