1.

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)`

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))`


Discussion

No Comment Found

Related InterviewSolutions