Work and Power Calculations

Which of the following would produce the most power?

• mass of 10 kilograms lifted 10 meters in 10 seconds 

• mass of 10 kilograms lifted 10 meters in 5 seconds

• mass of 5 kilograms lifted 10 meters in 5 seconds

• mass of 5 kilograms lifted 5 meters in 10 seconds

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

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 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 

Tags

NGSS.HS-PS3-1

A 5000N block is lifted 10 m. How much work was done?

• 50000 J

• 5000 J

• 500 J

• 50 J

Tags

NGSS.MS-PS3-4

P=25 watts 
W=5000 Joules 
t=???

• 200 sec

• 0.0005 s

• 125000 s

• 125 s

What force is applied to an object if 500 J is applied over a distance of 10 m? (Just write the number you calculate)

What distance does an object travel if 300 J is applied with a force of 50 N? (Just write the number you calculate)

What distance does an object travel if 10 J is applied with a force of 20 N? (Just write the number you calculate)

Tags

NGSS.HS-PS2-1

What work is done on an object if 200 W of power is consumed within 25 s? (Record just the number as your answer)