25pts
When Joel is riding his bicycle, he and the bicycle have a combined mass of 91.4 kg. The coefficient of kinetic friction between the bicycle's tires and the road is 0.61. If the bicycle was to skid to a stop, what would the force of friction be while the bicycle was sliding?
Ff=897 N
Ff=443 N
Ff=546 N
Ff=55.8 N