Question

Q. A train 280 metre long is running at a speed of 42 km/hr. How much time will it take to pass a man standing on a platform?​(Chapter-Direct and Inverse Variation)

Answer 1

Answer:

give data

s = 280 m & v = 42 km/h = 42×1000 m ÷ 3600 s = 11.66 m/s

t = ?

solution

As man is sitting on platform so whole train willll cover the distance of 280 m

v = s / t ⇒t = s / v  

t = 280 / 11.66 = 24 s

t =  24 s

train will take 6 second to cross thr tree.

Step-by-step explanation: