You and your bicycle have combined mass 80.0kg.When you reach the base of the bridge, you are
travelling along the road at 5.00m/s. (See figure below). At the top of the bridge, you have climbed a
vertical distance of 5.20m and have slowed to 1.50m/s. You can ignore work done by friction and any
efficiency in the bike or your legs.
(a) What is the total work done on you and your bicycle when you go from base to the top of
the bridge? (3 mks)
(b) How much work have you done with the force you apply to the pedals?(6 mks)
(c) Does this imply that energy is conserved? Briefly explain with respect to your findings above