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A particle moves along the space curve v...

A particle moves along the space curve `vec(r)=(t^(2)+t)hat(i)+(3t-2)hat(j)+(2t^(3)-4t^(2))hat(k)`. (t in sec, r in m ) Find at time `t=2` the (a) velocity, (b) acceleration, (c) speed or magnitude of velocity and (d) magnitude of acceleration.

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5i=3j+8k, (b) 2i+16k, (c) `7sqrt(2)`, (d) `2sqrt(65)`.
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MOTION-KINEMATICS-EXERCISE 3 SUBJECTIVE PROBLEMS (Level-1)
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