Work and Power

What does one newton exerted over a distance of one meter equal?

• One watt
• One hertz
• One volt 
• One joule 

Which of these is a measure of force?

• 100 newtons
• 100 meters per second
• 100 joules
• 100 watts

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

Which of the following is the best example of work being done.

• doing homework

• lifting a box

• pushing a stationary box

• holding a box

How much power is required to do 40.2 J of work in 3.3 s?

• 12.18 W

• 132.66 W

• 43.5 W

• 0.08 W

W = 500 Joules 
t = 25 seconds
P = ???

• 0.05 W
• 20 W
• 12500 W
• 2000 W

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