Mechanical Energy - Gifted

Determine the TOTAL MECHANICAL energy of the cart at position "D"

In reality, as the roller coaster moves along the track, some energy would be "lost". Where does the "lost" energy go? **CHOOSE TWO (2)**

• It disappears completely and never comes back

• It is transformed into thermal energy by friction

• It is transformed into sound energy

• It turns into matter

Tags

NGSS.MS-PS3-5

What happens to the to the KINETIC energy as the ball falls from point A to point C?

• It decreases

• It increases

• It doesn't change

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is Kinetic energy?

• a change in speed or direction

• the ability to cause changes, apply a force, or do work

• a force that works against motion as surfaces rub together

• the energy an object has because of its motion

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the kinetic energy at position Y? (ignore friction)

• 0J

• 10,000J

• 20,000J

• can not be determined

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

What is the kinetic energy at position X? (ignore friction)

• 0J

• 1,000J

• 19,000J

• can not be determined

Tags

NGSS.MS-PS3-1

What is the formula for mechanical energy?

• Ep = Ek + Em

• Em = gv + (1/2)hm²

• Em = Ek + Ek

• Em = (1/2)mv² + mgh

Where does the pendulum have the greatest kinetic energy?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5