Work Done

During a pull-up, a 90kg man raises himself by 80cm. Calculate the work done in a single pull-up.

• 720 Joules
• 72,000 Joules
• 1,125 Joules
• 112,500 Joules

How much work is produced when 350 N is used to move a car 5 m?

• 70 J
• 1750 J
• 355 J
• 175 J

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

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

• doing homework
• lifting a box
• pushing a stationary box
• holding a box

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

How much work is produced when 350 N is used to move a car 5 m?

• 70 J
• 1750 J
• 355 J
• 175 J

In which of these cases is work being done? 

• A student sleeps
• A student pushes a locked door that does not move
• a student carries his chair into another room
• A student sits on the carpet

What is the unit for mass?

• Kilogram (Kg)
• Newton (N)
• Joule (J)
• Watt (W)

Tags

NGSS.HS-PS2-1

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

• 12.5 N
• 1250 N
• 0.08 N
• 135 N

F=200 N
d=50 m
w=??

• 4 J
• 0.25 J
• 250 J
• 10,000 J