Work, Power, Energy Quiz

What has to happen when a force is exerted on an object for work to be done?

• the object moves
• the object stays still
• the object is heavy
• none of these

What is kinetic energy?

• stored energy
• energy of motion
• energy of friction
• energy stored in chemical bonds

Tags

NGSS.HS-PS3-2

How do we express the total amount of energy a moving object has?

• KE x PE
• KE + PE
• KE - PE
• KE / PE

Tags

NGSS.HS-PS3-2

When a roller coaster cart falls towards the ground, what happens to its potential energy?

• Increases
• Decreases
• Stays the same
• Nothing

Tags

NGSS.MS-PS3-2

When a rollercoaster cart moves towards the ground, what happens to the PE that it has?

• It transforms into KE
• It leaves the system
• Nothing
• It stays PE

Tags

NGSS.HS-PS3-3

What is the kinetic energy of a ball sitting on top of a hill?

• 0 J
• less than 0 J
• more than 0 J

The Law of Conservation of Energy states that total amount of energy in a closed system will always

• stay the same
• increase
• decrease
• cannot be determined

Tags

NGSS.HS-PS3-4

In order for work to be done, what must be true?

• Force acts in the same direction as the distance traveled.
• Force and distance are in opposite directions.
• Force is greater than distance.
• Distance is greater than force.

When you carry an object, is work done on it?

• Yes, force is applied in the same direction as the distance it travels.
• No, force is applied in a different direction than distance traveled.

In which situation is NO work done?

• picking up a book bag
• dropping the bookbag
• carrying the bookbag
• none of these