InterviewSolution
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InterviewSolution
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Two projectiles `A` and `B` are fired simultaneously as shown in figure. They collide in air at point at time `t`.Then A. `t(u_(1)cos theta_(1)-u_(2)cos theta_(2))=20`B. `t(u_(1)sin theta_(1)-u_(2)sin theta_(2))=10`C. Both (a) and (b) are correctD. Both (a) and (b) are wrong |
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Answer» Correct Answer - B `X_(A)=X_(B)` `:. 10+(u_(1)cos theta_(1))t=30-(u_(2)cos theta_(2))t` or `t(u_(1)cos theta_(1)+u_(2)cos theta_(2))=20` `y_(A)=y_(B)` `:. 10+(u_(1)sin theta_(1))t-1/2"gt"^(2)` `=20+(u_(2)sin theta_(2))t-1/2"gt"^(2)` `:. (u_(1)sin theta_(1)-u_(2)sin theta_(2))t=10` |
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