A bicyclist coasts without pedaling down an incline that makes an angle of 4o with the horizontal at a steady speed of 13 m/s. If the mass of the cyclist and the bike combined is 76 kg, use k-work (not Newton’s second law) to estimate the force of friction that must be acting on the bicyclist. (Hint: Think about what happens during a time interval of 1 s.)
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whats the answer?