1.

The displacement of a particle is given by x=21+ 3t2 (m).Find ts velocity at t=2 seconds

Answer»

dx/dt will be velocity =2+6tat 2 sec2+6*2=2+12=14m/d

X=2t+3t^2=dx/dt(2t+3t^2)=2+6tv at 2sec=2+6*2=14



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