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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A shell is fired from a gun from the bottom of a hill along its slope. The slope of the hill is alpha = 30 and the angle of the barrel to the horizontal beta = 60. The initial velocity v of the shell is 21 m/s

A shell is fired from a gun from the bottom of a hill along its slope. The slope of the hill is alpha = 30 and the angle of the barrel to the horizontal beta = 60. The initial velocity v of the shell is 21 m/s

A staircase contains three steps each 10 cm high and 20 cm wide. What should be the minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the lowest plane?