A cart is at when and at when

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A cart is at x=−2 mx=-2\,\text{m} when t=0 st=0\,\text{s} and at x=8 mx=8\,\text{m} when t=5 st=5\,\text{s}. Its average velocity for this interval is (a) 1.6 m s−11.6\,\text{m s}^{-1} (b) 2 m s−12\,\text{m s}^{-1} (c) −2 m s−1-2\,\text{m s}^{-1} (d) 1.2 m s−11.2\,\text{m s}^{-1}

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