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• NEET
• 11th
• Physics

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?

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Updated Thu, 20 Sep 2018 04:38 pm

• 11th
• Physics

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

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Updated Thu, 20 Sep 2018 04:33 pm

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