#1. If the coaster has a velocity = 0 at point A, what would be the potential kinetic energy if itsmass is 100 kg?#2. If the velocity of the coaster is 25 m/s at point C, what would be the total mechanical energyat point C?#3. How much energy was lost to friction at point C?#1. Did you lose Mechanical energy in each trial? If not explain why you think there was no lossin energy.#2. What is one real life use of calculating lost mechanical energy?#3. In Joule's experiment he was able to measure and quantify lost mechanical energy. Howwould we use this information today to predict a temperature change in water?#4. What is one way that we could minimize this loss of mechanical energy?

Total Mechanical Energy = KE + PE (For any point) In the real world we cannot assume this, so we will calculate the change in Total Mechanical energy from Point A to Point B. The difference in the energy we will assume was lost because of friction. Take this diagram of a roller coaster: A 100. m C E D 38 m 20. m B