A particle moving along a plane curve has a position vector r, a velocity v, and an acceleration a Unit vectors in the r and directions are e r and e , respectively, and both r and are changing with time Explain why each of the following statements is correctly marked as an inequality r a r re, r e, i re, u a i v a

Question: A particle moving along a plane curve has a position vector r, a velocity v, and an acceleration a. Unit vectors in the r- and

A particle moving along a plane curve has a position vector r, a velocity v, and an acceleration a. Unit vectors in the r- and θ-directions are e_r and e_θ, respectively, and both r and θ are changing with time. Explain why each of the following statements is correctly marked as an inequality.

r + a r + re, r + e, i + re,

r + a r + re, r + e, i + re, +u a i + v + a

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