Conservation of Energy

Question 1

At which position, A or B, is the potential energy of the swing the greatest? As the swing moves from point B to point A, which form of energy is increasing, kinetic or potential?

Revolt · Accepted Answer

Part 1: B; Part 2: kinetic; 100577

Question 2

Question 2

Revolt · Accepted Answer

kinetic

Question 3

At which point or points does the pendulum have the greatest kinetic energy?

Revolt · Accepted Answer

B only

Question 4

A 200 kg roller coaster car is located at the top of a hill where the height is 30 m. What is the velocity when it reaches the bottom of the hill?

Revolt · Accepted Answer

24.2 m/s

Question 5

Question 6

Revolt · Accepted Answer

100631

Question 6

A spring attached to a mass is at rest in the initial position (not shown). The spring is compressed in position A and is then released, as shown in position B. Which equation describes conservation of energy in position A?

Revolt · Accepted Answer

E = kx2

Question 7

The compressed spring of a dart gun has potential energy of 50 J. If the spring constant is 200 N/m, what is the displacement of the spring?

Revolt · Accepted Answer

0.7 m

Question 8

Question 9

Revolt · Accepted Answer

100639

Conservation of Energy Answers

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