2 balls of same mass are thrown horizontally from the top of a tower in the opposite direction with velocities 3m/s and 4m/s. The distance between the balls when their velocities are mutually perpendicular will be nearest to
a)10m b)7m c)5m d)2.5m
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1 Answers
85find the velocities of individual ball at time t . then find the dot product of the velocities .. u will get the time as dot product is 0
as horizontal velocity remains constant .. just multiply it with the derived time
Himanshu Giria which horizontal velocity 3 or 4
moreover dot product is 0 simply bcoz cos theta is 0
Upvote·0· Reply ·2013-06-21 17:45:18
