Internet Scavenger Hunt
(Click here for a printable copy of this Scavenger Hunt.)
Name ________________________
Click on the following Internet sites to answer the questions for that site:
http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/5-233/Ch3.htm
1. Label the four types of curves below:
a. ________________________
b. ________________________
c. ________________________
d. ________________________
2. Review the video of the I-35 to I-10 interchange on the first page of the module site. Decide the type of curve the I-35 to I-10 interchange fits. _______________________________
3. Which type of curve is most commonly used? ____________
4. Which type of curve, for safety reasons, should be used only when absolutely necessary? __________________________
Click on the following Internet sites to answer the questions for that site:
http://oldsci.eiu.edu/physics/DDavis/1150/05UCMGrav/Curve.html
5. What does the net force on a car traveling around a curve equal? _________________________________
6. What is the direction of the centripetal force? ___________________
7. What supplies the centripetal force for a car on a level curve? ________________________________________________________
8. What is the direction of the frictional force for a car traveling on a curve? ______________________________
9. What type of frictional force - static or kinetic - is used to determine the coefficient of friction between the tire of the car and the road? ________________
10. What equation gives the angle necessary for a car traveling at a specified speed on a banked curve? ________________________
Click on the following Internet sites to answer the questions for that site:
http://www.tfhrc.gov/pubrds/pr97-10/p47.htm
11. What is meant by the term design frequency? ___________________ ________________________________________________________
12. Define the term roadway design speed?________________________ ________________________________________________________ ________________________________________________________
13. What relationship was found between the required speed reduction and the likelihood drivers will not reduce their speed as much as required? ________________________________________________
14. Click on figure 2 to answer the following question. How many times greater would the expected crash rate of a curve with a speed reduction of 20 km/h be than the crash rate on a curve that requires no speed reduction. __________
Click on the following Internet sites to answer the questions for that site:
http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/circmot/ucm.html
15. Define uniform circular motion.______________________________ __________________________________________________________
16. What is the direction of the velocity vector relative to the circle? ____________________________
17. What two vector forces are perpendicular to each other in the diagram? _________________
18. An object moving in a circle at constant speed is undergoing uniform circular motion. Why is the velocity changing? __________________ ________________________________________________________
Click on the following Internet sites to answer the questions for that site:
http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/circmot/cf.html
19. What is the direction of the net force and what does it equal? ________________________________________________________
20. Which of Newton's Three Laws of Motion is used to explain why the ball in the second animation travels in a curved path? ____________
Click on the following Internet sites to answer the questions for that site:
http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/circmot/rht.html
21. View the animation. What supplies the force to make the passenger travel around the corner? __________________________________
Click on the following Internet sites to answer the questions for that site:
http://phywww1.ncssm.edu/physics/physlets/CURVE/curveintro.htm
22. What are the two components of the normal force on banked curves? ______________________________________________________
23. Give an equation that shows the summation of the forces in the y-direction. _________________________________________
24. Give the equation for centripetal force. ________________________
25. When you increase the banking angle, how can the maximum safe speed change? ____________________________________________
26. What is another name for the resultant of all forces? ______________
27. Where does the net force acting toward the center of the curve come from? ____________________________________
28. On unbanked curves, the centripetal force is equal to what expression? ________________________________________________________
29. Which of the following variables - mass, speed, radius, gravity, static friction - is not needed to calculate the centripetal acceleration? _________________________
Click on the following Internet sites to answer the questions for that site:
http://oldsci.eiu.edu/physics/DDavis/1150/05UCMGrav/UCM.html
30. What is the symbol for angular velocity and what is its unit? _______________________
31. Give the formula to convert angular speed to linear speed. _______________________
Click on the following Internet sites to answer the questions for that site:
http://www.pen.k12.va.us/Anthology/Pav/Science/Physics/book/curve.f/curves.html
32. Which way will a car tip if there is too much bank for a car's velocity?
33. Which way will a car tip if there is not enough bank for a car's velocity?
