Question

A stair case contains four steps each 20 cm high and 40 m wide. What should be the minimum horizontal velocity of a ball rolling off the upper most plane so as to hit directly the lowest plane a 0 2/3 m/s & m/s O 53 m/s O 1043 m/s
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Answer 1

Answer:

Let u be the minimum speed of the ball. Thus, the minimum horizontal velocity of the ball is 2 m/s.