Calvin & Hobbes, 45 kg, are sleigh riding down a hill. The hill they are on is irregular shaped,
slopes up and down and has snow of varying depths and textures. Below is a force vs time graph
of the force acting on their sled. The initial velocity when they hit the part of the hill
depicted on the graph at 11
m
/s.

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?