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Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km/ h in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by \(1 m/s^2\). If after 50 s, the guard of B just brushes past the driver of A, what was the original distance between them?
Updated Thu, 20 Sep 2018 04:38 pm
A particle is projected from a pipe at an angle \(\theta = 45^o\) wtih the vertical at a point P with a speed \(u = 10 ms^{-1}\). A strong horizontal wind gives a constant horizontal acceleration equal to \(5 ms^{-2}\) to the particle such that the particle reaches the ground at point Q which is exactly below P. The height of point P (in m) from the ground is \([g = 10 ms^{-2}]\)
(a) 30
(b) 40
(c) 50
(d) 60
Updated Thu, 20 Sep 2018 04:33 pm
