Physics, asked by litikaswani, 11 months ago

A train 100m long is moving with a constant velocity of 90km/h. Find the time taken to cross
the bridge 1km long​

Answers

Answered by Lokesh08
0

Answer:

Explanation:

distance to be travelled by the train to cross the bridge completely

s=1100m

u=90*5/18m/s

25m/s

t=s/u=1100/25=44seconds

Answered by Anonymous
6

Given :

  • Train lenght = 100m
  • Train is moving with velocity (v) = 90km/h

To Find :

  • Time taken to cross the bridge 1km or 1000m long.

Formula Used :

\bullet\large\underline{\boxed{\sf Time \: = \dfrac{Distance}{Velocity}}}

Solution :

Total Distance (s) = Lenght of train + Lenght of bridge

\implies{\sf s = 100 + 1000 }

\implies{\bf s = 1100\; m}

Convert velocity from km/h to m/s

\implies{\sf v= 90\: km/h }

\implies{\sf v = 90 \times \dfrac{5}{18}}

\implies{\bf v = 25 \: m/s }

Time taken to cross the bridge :

\implies{\sf  t = \dfrac{s}{v}}

\implies{\sf t = \dfrac{1100}{25} }

\implies{\bf t = 44 \: s }

Answer :

Time taken to cross the bridge is 44 s

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