Chapter 7 Practice Quiz Cpl - Period 1 - Friday, 4/17/20
5 Questions
| Total Attempts: 32
Archbishop Wood High School Physics 9 CPL – Period 1 Date: 4/17/20 Chapter 7 Practice Quiz – Machines, Work, and Energy Ms. Antes DIRECTIONS: Identify the choice that best completes the statement or answers the question.
Questions and Answers
- 1.The metric unit for work is the:
- A.
Newton.
- B.
Joule.
- C.
Watt.
- D.
Meter.
- 2.In a theoretical machine, work output:
- A.
Can be calculated by dividing output displacement by output force.
- B.
Is always greater than the work input.
- C.
Can be calculated by multiplying output force by output displacement.
- D.
Is always less than the work input.
- 3.All of the following are considered to be simple machines EXCEPT:
- A.
Scissors.
- B.
A bicycle.
- C.
A jackknife.
- D.
A see-saw.
- 4.The fixed point around which levers rotate is called the:
- A.
Input Arm.
- B.
Output Arm.
- C.
Fulcrum.
- D.
Lever Arm.
- 5.Friction is a “catch-all” term for many processes that oppose:
- A.
Heat.
- B.
Wear.
- C.
Motion.
- D.
Temperature.
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