Question

5.
A train 280 metres long is running at a speed of 42
take to pass a man standing on a platform?
6.
A train 350 metres long crosses an electric pole in 28
the train in km/hr.​

Answer 1

Answer:24s

Step-by-step explanation:time = distance ÷ speed

here the distance is the length of train itself. = 280m.

speed = 42km/h = 42×5/18 = 35/3m/s.

time = 280 ÷ 35/3

= 280 × 3/35 = 24s.

hope it helps...............

Answer 2

Question 5) :- A train 280 metres long is running at a speed of 42km/h. How much time it take to pass a man standing on a platform ?

Answer :-

→ Distance covered in crossing a man = Length of train = 280m .

→ Speed of train = 42 km/h = (42*5/18) = (35/3) m/s .

→ Time to cover = (Distance/Speed) = 280 ÷ (35/3) = 280 * (3/35) = 24 seconds (Ans.)

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Question 6) :- A train 350 metres long crosses an electric pole in 28seconds . Find the speed of train in km/hr. . ?

Solution :-

→ Distance covered in crossing a Electric pole = Length of train = 350m .

→ Time to cross = 28 seconds .

→ Speed of Train = (Distance/Time) = (350/28) = (25/2) m/s = (25/2) * (18/5) = 45 km/h (Ans.)

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