Air resistance do positive-negative-zero work on pinecone

Reference no: EM13650117

A 0.14-kg pinecone falls 16m to the ground, where it landswith a speed of 13m/s. (a) With what speed would the pinecone have landed if there had been no air resistance? (b) Did airresistance do positive work, negative work, or zero work on the pinecone? Explain.

Reference no: EM13650117

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