Question

If a 200m long train crosses a 150 m long platform in 12s then what is its speed

Answer 1

speed = distance / time
total distance = 200 + 150 = 350m
time = 12
speed = distance /time = 350/ 12 = 29.16 m /sec

Answer 2

Answer:

Speed = 29.17 m/s

Explanation:

It is given that,

Length of the train, l = 200 m

Length of the platform, d= 150 m

Time taken, t = 12 s

$Speed=\dfrac{total\ distance}{total\ time}$

$Speed=\dfrac{l + d}{t}$  

$Speed=\dfrac{200+150}{12}$  

Speed, s = 29.17 m/s

Hence, this is the required solution.