Posted by **Anonymous** on Tuesday, February 7, 2012 at 8:46pm.

A cyclist is riding in the positive horizontal direction at 14.8 m/s on a horizontal level surface. He encounters an air resistance force of 50 N. The actions on the pedals by the cyclist cause a backward force of 73 N to be exerted by the rear wheel on the ground. The mass of the cyclist-bike system is 89 kg. calculate the horizontal acceleration of the center of mass of the system.

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