Work

What are the two things that need to occur for work to have been done?

• force and movement in the same direction as the applied force

• movement and direction

• constant force and power

• power and work

The unit of work is

• watt

• hertz

• joule

• pascal

What is the work done when a 20-N force pushes a cart 3.5 m?

• 70J
• 6.8J
• 23.5J
• 17.5J

Which of the following is a true statement about work?

• It measures how quickly an object accelerates 
• It measures how much effort is applied over a certain distance
• It measures the change in an object's rate of speed
• It measures how much time it takes to move a massive object

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

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

Tags

NGSS.HS-PS3-1

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 

• 77 J
• 7.7 J 
• 0.7 J 
• 770 J 

Tags

NGSS.HS-PS3-2

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?

• 600 J 
• 660 J
• 900 J 
• 1200 J 

Tags

NGSS.HS-PS3-1

The FARTHER you move an object, the more work you do.

• True
• False

Tags

NGSS.MS-PS3-5

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

• 12 J

• 8 J

• 20 J

• 5 J

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

• 200 J

• 80 J

• 5 J

• 2000 J

Tags

NGSS.MS-PS3-5