1 A cyclist and bicycle have a total mass of 72 kg . The cyclist rides along a horizontal road against a total resistance force of 28 N . Find the total work done by the cyclist to increase his speed from \(8 \mathrm {~ms} ^ { - 1 }\) to \(16 \mathrm {~ms} ^ { - 1 }\) while travelling a distance of 100 metres.