Download Chapter 14 - Work and Power – Physical Science Study Guide What

Chapter 14 - Work and Power – Physical Science Study Guide
1. What is the difference in work and power?
2. A force acting on an object does no work if _________________________________.
3. What is the unit of work?
4. Know how to solve a work problem
5. What is the SI unit for power?
6. The power of machines measures ________________________________________.
7. Know how to solve a power problem
8. What do you do to increase power?
9. A machine is a device that can multiply __________.
10. When a machine does work it can not increase a force and _______________________.
11. How can a machine make work easier for you?
12. How can you make the work output of a machine greater than the work input?
13. The actual mechanical advantage of a machine is less than the _______________ of the
machine.
14. If you know the input distance and output distance of a machine, what can you calculate?
15. Know how to solve IMA problem
16. Reducing friction in a machine increases its efficiency.
17. An incline plane reduces effort force by _____________________________.
18. An ax is an example of a ________________.
19. What is an example of a wheel and axle?
20. The ideal mechanical advantage of a pulley system is equal to _______________________.
21. The IMA of a wheel and axle is found by________________________________.
22. What is an example of a compound machine?
23. A machine is classified as a compound machine if it _________________________________.