1. Potential energy and a roller coaster. A 1000-kg roller coaster car moves from point A to B then C. (a) What is the potential energy at B and C
relative to A?

(b) What is the change in potential energy
as it goes from B to C?

(c) What is the potential energy at B and C relative to point C?

(d) What is the change in potential energy as it goes from B to C?

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic