Question

An 150 m long train crosses a brige that is 450m long in 50 sec with a constant velocity . What is the velocity of the train.​

Answer 1

Answer:

450/50=9

9×150=1350m/s.

Answer 2

Given:

length of train = 150m

length of bridge = 450 m

time t = 50sec

To find:

velocity of the train v =?

Step-by-step explanation:

• The length of the train is 150m.
• This train crosses the bridge of length 150m in 50 sec with a constant velocity.
• Hence, the total distance traveled by train is the sum of the length of a train & a length of a bridge.
• The velocity of a train is given by

        $\displaystyle v = \frac{ length \ of\ train + length \ of\ bridge }{ime}$

        $\displaystyle v = \frac{150+450}{50}$

        $\displaystyle v = \frac{600}{50}$

        v = 12 m/s

• The velocity of the train is 12m/s.