A 34 kg boy is riding his bicycle on the road. He exerts an 85 N force parallel to the road. If the acceleration of the bicycle is 1.9 m/s2, then what is the mass of the bicycle?

A.
11 kg
B.
15 kg
C.
34 kg
D.
45 kg

A. 11

Explanation:

Force exerted is the mass multiplied by the acceleration.

In this case the total mass is the sum of the mass of the boy and the mass of the bicycle and the force is 85.

Hence force is (34+x)*1.9.

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explanation:

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