SP5. A sled and rider with a total mass of 40 kg are perched at the top of a hill as pictured in the diagram. The top of this hill is 40 m above the low point in the path of the sled. A second hump in the hill is 30 m above this low point. Sup- pose that we also know that approximately 2000 J of work is done against friction as the sled travels between these two points. a. Will the sled make it to the top of the second hump if no kinetic energy is given to the sled at the start of its motion? Explain. b. What is the maximum height that the second hump could be in order for the sled to reach the top, assum- ing that the same work against friction will be involved and that no initial push is provided? Explain. 40 m 30 m SP5 Diagram