The position of a particle is given by b...

The position of a particle is given by `barr = 3.0thati + 2.0t^2hatj + 5.0hatk`. Find the velocity of particle at t=2sec

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The position of particle is given by vecr=3.0thati-2.0t^2hatj+4.0hatk . Find the magnitude and direction of velocity of the particle at t=1.0s.

The position of a particle is given by r=3.0r hati-2.0t^2 hatj+4.0 hatk m Where t is in seconds and the coefficients have the proper units for r to be in metres. What is the magnitude and direction of velocity of the particle at f = 2.0 s?

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R G PUBLICATION-MOTION IN A PLANE-EXERCISE

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Equations of Motion
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Do barA + barB and barA - barB lie the same plane?
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