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A particle is moving on a straight line with velocity (v) as a function of time (t) according to relation `v = (5t^(2) - 3t + 2)m//s` . Now give the answer of following questions : Velocity of particle at t = 3 sec. is :A. `30 m//s`B. `38 m//s`C. `22 m//s`D. `36 m//s` |
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Answer» Correct Answer - B Velocity of …………. `V=(5t^(2)-3t+2)m//s` `V_((t=3))=5(3)^(2)-3(3)+2=45-9+2=38m//s`. |
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