Conservation of Mechanical Energy

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed

Potential or kinetic?
Stretched bow and arrow?

• kinetic
• potential

Tags

NGSS.MS-PS3-2

Potential or kinetic?
Running?

• potential
• kinetic

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

On a roller coaster, where is maximum potential energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

Tags

NGSS.MS-PS3-2

On a roller coaster, where is maximum kinetic energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

Tags

NGSS.MS-PS3-1

What force causes the carts to slow down?

• friction
• applying force
• gravity
• gravity and friction

Tags

NGSS.MS-PS2-2

________ is the energy possessed by an object because of its motion.

• Power
• Force 
• energy
• kinetic energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A moving object will eventually come to a stop due to friction because...

• All of the energy in the system was destroyed
• All of the energy in the system was transformed into thermal energy
• The system could not create enough energy to keep the object moving

In a real life situation, when a roller coaster is released from the top of a hill, halfway down the hill...

• Exactly half of the energy is kinetic and half of the energy is potential
• All of the energy is potential
• All of the energy is kinetic
• Some of the potential is converted to kinetic and a small amount is transformed into thermal energy

As the skater was moved higher up the ramp, the amount of potential energy...

• Increased
• Decreased
• Stayed the same

Tags

NGSS.MS-PS3-2