Question

A train is 150 m long .how much time will it take to cross a platform of length 250m if it is running at a speed of 90 km/h solution

Answer 1

Answer:-

$\implies \: \boxed{ time \: = 16 \: } \: seconds$

Step - by - step explanation:-

Formula used :-

→ Speed = distance /time

Solution :-

Length of train = 150 m

Length of platform = 250 m

Firstly change the speed into m/s

$\star \: speed \: \implies \: 90 \: \frac{km}{hr} = 90 \times \frac{5}{18} \frac{m}{s} \\ \\ speed \: \implies \: 5 \times 5 \: \frac{m}{s} = 25 \: \frac{m}{s}$

Now total distance ↓

→ Length of train + length of platform

→(150 + 250 )m = 400 m

Using formula

$\implies \: time \: = \frac{distance}{speed} \\ \\ \implies \: time \: = \frac{400}{25} \\ \\ \implies \: \boxed{time \: = 16} \: \: seconds$

Answer 2

Answer:

SOLUTION:

=Length of train =150m

= Length of flatform = 250m

Firstly change the speed into m/s

Speed= 90 km/ h = 90×5/18 m/s =25m/s

Now total distance

length of train+length of platform

(150+250)m = 400 m

USING FORMULA

= Time = distance/speed

Time = 400/25

Time= 16 second