Mechanical Energy and Heat Transfer

What two types of energy are added together to determine an objects total amount of mechanical energy?

• Kinetic and Potential Energy

• Kinetic and Nuclear Energy

• Potential and Chemical Energy

• Thermal and Kinetic Energy

Kinetic Energy is defined as

• Energy stored due to its location
• Energy of motion
• Energy stored in the bonds of molecules
• Heat energy

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

NGSS.HS-PS3-2

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

Tags

NGSS.MS-PS3-2

What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic

Tags

NGSS.MS-PS3-2

What kind of energy is in a waving hand?

• Potential
• Kinetic

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

To make things move, you need a −

• force.
• strong magnet.
• metal object.
• helper.

Tags

NGSS.MS-PS2-2

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

• doing homework

• lifting a box

• pushing against a parked semi truck

• holding a box

In which of these cases is work being done?

• A student sleeps

• A student pushes a locked door that does not move

• A student lifts his chair onto the desk

• A student sits on the carpet

The amount of work done depends on:

• the size of the force on the object, the distance the object moves
  
• the size of the object, the distance the object moves
  
• the size of the force on the object, the speed of movement
  
• the size of the force on the object, the friction acting upon the object
  

When a force acts on an object causing the object to be displaced work is done. Work is NOT being done when carrying a backpack. Why?

• The force you are putting on the backpack is pulling it up but the backpack's movement is also upward

• The force you are putting on the backpack is pulling it up but the backpack's movement is forward and not upward