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A ball is drpped from rest at height `4h`. After it has fallen a distance `d`, a second ball is dropped from rest at height `h`. What should `d` be (in terms of `h`) so that the balls hit the ground at the same time?A. `d=(3H)/2`B. `d=H/3`C. `d=H`D. `d=3H` |
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Answer» Correct Answer - C For the `1^(st)` ball, `4h=("gt"_(1)^(2))/2impliest_(1)=2sqrt((2h)/g)` & For second ball `t_(2)=sqrt((2h)/g)` also `sqrt((2h)/g)+sqrt((2d)/g)=2sqrt((2h)/g)implies2sqrt(h)=sqrt(d)+sqrt(h)impliesd=h` |
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