# Vestal Regular Phantom\'s Revenge

4 Questions | Total Attempts: 72

Settings

• 1.
If you notice, the Phantom Menace isn't stopped at its highest point. It is actually moving a at a good speed of 19 m/s. If a roller coaster cart has a mass of 200 kg with people inside, what is the kinetic energy of the cart at this moment?
• A.

72000 J

• B.

38000J

• C.

3800 J

• D.

47000J

• 2.
This is a simplified picture of the Phantom's Revenge: Between position A and B, what will happen to the potential energy?
• A.

It will decrease

• B.

It will increase

• C.

It will remain constant

• D.

There isn't enough information to answer this question.

• 3.
If you notice, the Phantom Menace isn't stopped at its highest point. It is actually moving a at a good speed 19 m/s. A cart has a mass of 200 kg. How fast will the cart be going when it has dropped 50 m? Hint: Use the conservation of energy equation. Neglect friction and air resistance.
• A.

36.6 m/s

• B.

25.7 m/s

• C.

72.8 m/s

• D.

82.5 m/s

• 4.
Which one do you like?
• A.

Yes, because the law of conservation says energy is conserved, so all kinetic will turn back in potential

• B.

Yes, because the force acting on the carts is constant

• C.

No, because some of the mechanical energy will turn into thermal energy (friction)

• D.

No, because the total energy disappeared as the cart moved forward.