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40. The acceleration of a particle in m/s2 is givenbya 3t2 +3t +5What is its velocity at the end of 2 s, if its initialvelocity is 3 m/s?(1) 17 m/s(2) 22 m/s(4) 32 m/s27 m/s |
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Answer» a=3t^2+3t+5so v=integration(a) =t^3+3/2t^2+5t+cwhere c is a constantnow initial velocity is 3so c=3so velocity at the end of 2s(2)^3+3/2(2)^2+5*2+3=8+6+10+3=27m/s |
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