A 68.0 kg rider sitting on a 8.2 kg bike is riding along at 8.4 m/s in the positive direction. The rider drags a foot on the ground and slows down to 6.3 m/s still in the positive direction. What is the change in momentum of the rider and bike? Tries 0/10 What is the impulse delivered by the ground to the rider's foot? Tries 0/10 What force is acting on the bike and rider if slowing down took 9.0 seconds? Tries 0/10 And, how far did the bike and rider travel during these 9.0 seconds? Tries 0/10