Power and Work Problems

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

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

• power
• work
• momentum
• Watt

Tags

NGSS.HS-PS3-3

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

• doing homework

• lifting a box

• pushing a stationary box

• holding a box

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

• 50000 J
• 5000 J
• 500 J
• 50 J

Force is a _____ or _______

• simple    complex
• push     pull
• up      down
• in      out

Tags

NGSS.HS-PS2-1

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)

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?

• 3.8 m
• 3.7 m
• 3.2 m
• 3.6 m

Tags

NGSS.HS-PS3-1

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

• 15 J
• 45 J
• 0 J
• 5 J

The amount of work done in a certain amount of time is known as 

• work
• effort force
• resistance force 
• power