Question: The Vector r(t). 6costi + bsint; + tk gives the position. of a moving body at time t`. Find the instantaneous velocity, speed &

The Vector r(t). 6costi + bsint; + tk gives the position. of

The Vector r(t). 6costi + bsint; + tk gives the position. of a moving body at time t`. Find the instantaneous velocity, speed & acceleration when t=1. At times if any, are the bodies velocity & acceleratio orthogonal ?

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