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From top of a huilding a ball is dropped...

From top of a huilding a ball is dropped while another is frpjected horizontally at the same tme . (a) Which ball will strike the ground first ? (b) Which ball will strike the ground with more speed.

Text Solution

Verified by Experts

Both the balls will react the ground simultaneously as horizontal velocity does not affect the vertical motion.
i.e., `t_(1) = t_(2) = sqrt((2h//g))`
[However, for the ball dropped vertically `v_(1) = sqrt((2gh))` while for the ball projected horizontally.
`(v_(H))_(2) = u` and `(v_(v))_(2) = sqrt((2gh))` so that `v_(2) = sqrt((u^(2) + 2gh))` i.e., on hitting the ground speed of horizontally porjected all will be more than the ball dropped vertically]
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