Question

The range of a cannot ball fired horizontally from a laboratory table is equal to 8/3 Times the height of a table What is the direction of velocity of the projectile as it strikes the ground?

Answer 1

If the height is h, then the time it takes to fall is
4.9t^2 = h
In that time, it travels 8/3 h, so its horizontal velicity is
(8/3 h)/t = 8h/3 √(4.9/h) = 8/3 √(4.9h)
Its vertical velocity is -9.8t = -9.8 √(h/4.9)
now finish it off

Answer 2

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