Review for Power/Work/Energy

You do work when

• you exert a force on an object but the object does NOT move.

• you exert a force on an object and it moves in the opposite direction of your force.

• you exert a force on an object that causes it to move in the same direction as the force

• the object moves, but no force is applied.

Which of the following is a unit for Force?

• 3J

• 25N

• 6m

• 28s

Force is measured using which type of unit?

• Meters
• Kilograms
• Newtons
• Joules

Which of the following would be an example of Work

• 13W

• 14m

• 45J

• 10N

Which of the following is an example of work being done?

• Teacher sitting in a chair
• Book resting on desk
• Keys hanging from a key chain
• A ball being rolled on the floor

Tags

NGSS.MS-PS3-5

What is the equation for work?

• W = mass * acceleration
• W = force * distance
• W = force/distance
• W = speed/time

In which of these cases is work being done?

• A student sleeps

• A student pushes a locked door that does not move

• a student pushes his chair into another room

• A student sits on the carpet

How is work defined?

• the amount of energy 
• the transfer of force over a distance
• rate of work in a given time
• the change in distance in a given time

Tags

NGSS.MS-PS3-5

What is the unit of measurement for work?

• Newtons
• Joules 
• Watts
• Meters

Tags

NGSS.MS-PS3-5

How is power defined?

• transfer a force through a distance
• the rate of speed 
• the rate of work being done
• transfer of space over time

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5