The equation r(t) = (2t + 5) i + (t² − 1) j + (t) k is the position of a particle in space at time t. Find - the particle's velocity and acceleration vectors. Then write the particle's velocity at t = 1 as a product of its speed and direction.

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A: Step 1: Step 2: Step 3: Step 4:

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A: Step 1: Step 2: Step 3: Step 4:

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