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A particle travels with speed `100m//s^(2)` from the print `(10, 20)` in a direction `24hat(i)+7hat(j)`. Find its position verctor after `2` seconds.A. `202hat(i)+76hat(j)`B. `204hat(i)+78hat(j)`C. `40hat(i)-151hat(j)`D. `45hat(i)-151hat(j)` |
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Answer» Correct Answer - A Displacement= (velocity) time `=100``((24hat(i)+7hat(j))/(25))(2)=(192hat(i)+56hat(j))m//s` `:. Deltavec(r)=vec(r_(2))-vec(r_(1))` `:. Deltavec(r_(2))=(101hat(i)+20hat(j))+(192hat(i)+56hat(j))=(202hat(i)+76hat(j))` |
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