QUIZ 3.4 WORK AND POWER

The amount of work done in a certain amount of time is known as 

• work
• effort force
• resistance force 
• power

 Work done = Force x _________

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

units for work are

• netwons
• joules
• meters
• seconds

The unit used to measure power is the 

• Watt
• Newton
• Joule
• Newton*meter

How much work is being done with 200 N of force over 426 meters?

• 85,200 J
• 45,620 J
• 90,480 J
• 62,329 J

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N
• 15 N
• 1.5 N
• 150 N

You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?

• Yes, work was done

• No, work wasn't done

If 68 W of power is produced in 18 seconds, how much work is done?

• 1,224 J
• 0.264 J
• 3.77 J
• 12.24 J

How much time is needed to produce 720 Joules of work if 90 watts of power is used? 

• 0.125 s
• 8 s
• 64800 s
• 80 s

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

• 272 m
• 17 m
• 4.05 m
• 272 cm