Physics

Physics

Problem

A cyclist reduces her speed from 12 m/s12\,\text{m/s} to 8 m/s8\,\text{m/s} in 2 s2\,\text{s} on a straight road. Which of the following correctly states the value and nature of her acceleration? a) +2 m/s2+2\,\text{m/s}^2, the cyclist is slowing down b) −4 m/s2-4\,\text{m/s}^2, the cyclist is slowing down c) −2 m/s2-2\,\text{m/s}^2, the cyclist is slowing down d) −2 m/s2-2\,\text{m/s}^2, the cyclist is speeding up

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