A cyclist and bicycle have a total mass of 90 kg. The cyclist accelerates from rest with a driving force of 135 N, against a frictional force of 30 N. What is the acceleration of the cyclist?

A1.5 m/s²

B0.33 m/s²

C1.83 m/s²

D1.17 m/s²

Explanation

Resultant force = 135 - 30 = 105 N. a = F/m = 105/90 = 1.17 m/s².

Derived from ZIMSEC Physics 4023/2 Paper 2 Theory, November 2019, Q1

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