Hi,
You must be aware about the equation for the motion in vector form which is given by xi+yj+zk. You have to substitute the values for x, y and z as you mentioned in the question.
For velocity, you will have to differentiate this equation with reference to t and put the value for t as given in the question. Simliarily for acceleration, you will have to double differentiate the equation and then substitute the value of t here too. You will then get your answer.
I hope this helped you.
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