Two balls A and B are simultaneously released on two frictionless inclined planes from the position shown. The inclined planes have equal inclinations. The balls pass through a particular horizontal level 12s and 4s after they were released. How long after they were released will they be closest to each other?
A projectile is fired with velocity u at entrance A of a horizontal tunnel of length L and height H. The minimum value of u for which projectile will reach the other end of the tunnel without touching the top of the tunnel is
At t = 0, a stone is dropped into a well in which the level of water is h below the top of the well. If v is velocity of sound, the time T measured from t = 0, after which the splash is heard is given by ?
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