Energy, Work, Power

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

Tags

NGSS.MS-PS2-2

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

 Work done = Force x _________

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

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

• 50000 J
• 5000 J
• 500 J
• 50 J

Tags

NGSS.HS-PS3-1

W=125 J
d=10 m
F=???

• 12.5 N
• 1250 N
• 0.08 N
• 135 N

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

Tags

NGSS.HS-PS2-1

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 

A girl pushes a box across the floor. Did she do work?

• no
• yes

Which situation is work not done?

• lifting a 20 pound box off the floor
• holding a 20 pound box above the floor
• sliding a 20 pound box across the floor
• sliding a 20 pound box up an inclined plane

W= 20 Joules
F= .5 Newtons
D=??

• 40 Newtons
• 10 Newtons
• 40 Kilometers
• 10 Kilometers