Mathematics

Mathematics

Problem

A particle moves in the plane for 0≤t≤40\le t\le 4 seconds with velocity vector v(t)=⟨3t2−2,  4cos⁡t⟩ (meters per second).\mathbf v(t)=\langle 3t^{2}-2,\;4\cos t\rangle\text{ (meters per second).} At t=0t=0 the particle is at position r(0)=⟨5,−1⟩\mathbf r(0)=\langle 5,-1\rangle meters. (a) Derive an explicit expression for the position vector r(t)\mathbf r(t) for 0≤t≤40\le t\le 4. Show all steps in your derivation. (b) Determine the particle’s position at t=4t=4 seconds. (c) Compute the displacement vector of the particle over the interval 0≤t≤40\le t\le 4 seconds. (d) Evaluate the total distance traveled by the particle on 0≤t≤40\le t\le 4. Express your answer to three decimal places and include appropriate units.

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