0%

Question 1 of 13

1. Which of the following variables are known?

Question 1 of 13

Question 2 of 13

2. What type of energies should we study in this exercise?

Question 2 of 13

Question 3 of 13

3. During the track, does the car lose energy?

Question 3 of 13

Question 4 of 13

4. Which method should we use to find the speeds at the different points in the track?

Question 4 of 13

Question 5 of 13

5. Do any points have the same kinetical and potential energy?

Question 5 of 13

Question 6 of 13

6. Take the following coordinate system:

 

Organize the points from the lowest to the biggest gravitational potential energy.
  • D
  • A
  • B
  • C

Question 6 of 13

Question 7 of 13

7. Take the following coordinate system:

 

Consider the gravitational potential energies and the energy conservation, organize the points from the lowest to the highest kinetic energy.
  • A
  • D
  • C
  • B

Question 7 of 13

Question 8 of 13

8. Which of the following equations is the kinetic energy equation?

Question 8 of 13

Question 9 of 13

9. Which of the following equations is the gravitational potential energy equation?

Question 9 of 13

Question 10 of 13

10. Take \(X\) to express an arbitrary point on the track. Which of the following is a general expression of the energy conservation in the toy car track?

Question 10 of 13

Question 11 of 13

11. Take the last equation and solve for \(v_X\). Which of the following equations is equivalent to yours?

Question 11 of 13

Question 12 of 13

12. Which of the following statements are true?

Question 12 of 13

Question 13 of 13

13. Replace the values of the heights in the speed equation for each point. The speed at point A is \(\text{m/s}\), at point B is \(\text{m/s}\), at at point C and E is \(\text{m/s}\), and at point D is \(\text{m/s}\).

Question 13 of 13