Work, Power and Energy Review. ESL Physical Science

If a crane moves a rock upward for 25 m with a force of 20,000 N, how much work did the crane use?

• 500,000 J
• 800 J
• 45,000 J
• 5,000 J

If a ballerina moves upward a distance of 0.6 m with a force of 600 N, how much work was done?

• 1,000 J
• 0.001 J
• 360 J
• 600.6 J

If a person used a force of 200 N to push a lawnmower a distance of 12 m, how much work was done?

• 212 J
• 188 J
• 16.7 J
• 2,400 J

If an elevator motor uses 80,000 J of work in 40 seconds, how much power was applied?

• 4,000 W
• 2,000 W
• 3,200,000 W
• 0.0005 W

If a car motor does 4,500,000 J of work in 30 seconds, how much power is produced?

• 4,500,000 W
• 150,000 W
• 13,500,000 W
• 6.67 W

If a person pushes a heavy rock up a hill with a work of 540 J in 120 seconds, how much power was used?

• 4.5 W
• 0.22 W
• 64,800 W
• 660 W

Yes if work exists or No if work doesn’t exist: A person pushing up a box.

• Yes
• No

Yes if work exists or No if work doesn’t exist: A person who is carrying boxes and walking left.

• Yes
• No

Yes if work exists or No if work doesn’t exist: A boy is pushing a wall.

• Yes
• No

Yes if work exists or No if work doesn’t exist: A car that pulls a trailer.

• Yes
• No

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2