1. "Hmmm," Bob says to you. "I can't remember any of my lessons from physics class. Will you help me?" "Sure, Bob," you say. "What exactly is a rollercoaster?" "Um...I can't remember." "A machine using high powered jet engines to send a car along a track." "A machine using gravity and inertia to send a car along a track." "The best thing that's ever happened to amusement parks!"

2. Bob looks puzzled. While scratching his head, he asks, "Where does the rollercoaster get its energy from?" "Its engines." "A hamster running on wheels. It's a well-kept secret." "Spinach, like Popeye." "The lift hill."

3. Bob says to you, "I've designed my first hill to be 50 feet tall. I want to build a loop right after it and I want it to be 60 feet tall." "Bob, you can't do that," you say. Why? "Because the loop is the same size as the first hill." "Because we don't have enough materials to build the loop." "Because the loop is smaller than the first hill." "Because the loop is taller than the first hill."

4. "A rollercoaster is basically just mechanical energy? Is that true?" Bob asks. Yes No

5. "I understand mechanical energy," Bob says to you, "but what exactly is kinetic energy?" "Stored energy." "The energy of motion." "The energy that unmoving objects use." "The energy of doctors."

6. One of Bob's other designers sighs. "I wish we could make our coaster use linear synchronous motors like that rollercoaster I once was on." "What rollercoaster?" You ask. "Scream from Six Flags New England." "Dueling Dragons from Universal's Island of Adventure." "Superman: the Escape from Six Flags Magic Mountain." "Space Mountain from Disneyland."

7. Bob stares at his paper. "This coaster will definitely be a steel hyper-coaster. Or should it be a giga-coaster?" He turns to you. "What's the difference?" he asks. "A hyper-coaster's first hill is 300 ft and a giga-coaster's is 200 ft." "A hyper-coaster's first hill is 200 ft and a giga-coaster's is 300 ft." "None. They are both the same height." "The giga-coaster is suspended, while the hyper-coaster is a stand-up coaster."

8. "I'm thinking about adding some interesting track elements to my rollercoaster," Bob says to you. "But I spilled coffee all over my reference paper! What's a bunny hop again?" "It's that cool dance craze, not a track element at all." "It's a stretch of flat track." "A bunny hop is when a rabbit continuously hops in a straight line." "It's a small or large hill."

9. Bob says, "I think I understand potential and kinetic energy now. The rollercoaster has its greatest amount of potential energy at the bottom of the highest hill." True False

10. You turn to leave. It looks like Bob's other designer can help him the rest of the way. "One last thing," says Bob. "I just want to make sure that I understand rollercoasters. The two major forces that drive them are gravity and centripetal force, but it also uses inertia." True False