Work, Power, Mechanical Advantage quiz

What is the equation for power?

• P = Work/time
• P = Force/time
• P = time/distance
• P = Work * time

What is the unit of measurement for Power?

• Joules
• Newtons
• Watts
• Meters

If you push a coffee mug 1.4 m using a force of 5 N, the work done on the mug is?

• 7 J
• 6 J
• 8 J
• 9 J

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

Any device that makes work easier is called a ______________________.

• Joule 
• prop
• lever
• machine

Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever (MA=Output Force/Input Force)?

• 1

• 10

• 100

• 1000

What is the equation for power?

• P = Work/time
• P = Force/time
• P = time/distance
• P = Work * time

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

The efficiency of a machine can be increased by reducing __________________________. 

• effort
• resistance friction
• fulcrum
• friction