PH-1428

Resultant force and F = ma

Physics · Secondary 4 · Medium · Resultant force and F = ma

A cyclist and bicycle have a total mass of 70 kg. The air resistance and friction opposing the motion total 60 N. The cyclist pedals so that the forward driving force is 140 N. What is the acceleration of the cyclist?

$0.57\,\text{m s}^{-2}$
$0.86\,\text{m s}^{-2}$
$1.1\,\text{m s}^{-2}$
$2.3\,\text{m s}^{-2}$

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