a train is running at a speed of 40 km / hr and it crosses a post in 16.2 seconds . what is the length of the train ?
"speed of the train , v = 40 km / hr = 40000 / 3600 m / s = 400 / 36 m / s time taken to cross , t = 16.2 s distance covered , d = vt = ( 400 / 36 ) ã — 16.2 = 160 m distance covered is equal to the length of the train = 160 m correct answer is 160 metres b"
multiply(16.2, multiply(40, const_0_2778))