You and your bicycle have combined mass 80.0 kg. When you reach
the base of a bridge, you are traveling along the road at 4.50 m/s
(the figure (Figure 1) ). At the top of the bridge, you have
climbed a vertical distance of 5.20 m and have slowed to 2.50 m/s .
You can ignore work done by friction and any inefficiency in the
bike or your legs.
a) What is the total work done on you and your bicycle when
you go from the base to the top of the bridge?
b) How much work have you done with the force you apply to
the pedals?