Energy Conservation

What does the expression below define?

• Potential Energy

• Kinetic Energy

• Mechanical Energy

• Thermal Energy

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-2

What does the expression below define?

• Potential Energy

• Kinetic Energy

• Mechanical Energy

• Thermal Energy

At point C, the mass in the pendulum has ________ PE, and ________ KE.

• maximum, maximum

• maximum, minimum

• minimum, maximum

• not sure

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

At point A and E, the mass in the pendulum has ________ PE, and ________ KE.

• maximum, maximum

• maximum, minimum

• minimum, maximum

• not sure

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

At every point the mechanical energy...

• is constant

• is zero

• is changing

Tags

NGSS.HS-PS2-2

NGSS.HS-PS3-1

A 2-kg ball is at rest at pt. A, what is the potential energy at pt. A?

• 2J

• 20J

• 100J

• 50J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

As the 2-kg ball descends the potential energy ...

• increases

• decreases

• stays constant

As the 2-kg ball descends the kinetic energy ...

• increases

• decreases

• stays constant

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What is the KE at point C of the 2kg ball if the E_M equals 100J?

• 20J

• 40J

• 60J

• 100J

Tags

NGSS.HS-PS3-1

If KE= 60J, what is the velocity at point C of the 2kg ball?

•  $\sqrt{2}$ 

•   $\sqrt{6}$  

•   $\sqrt{10}$  

•   $\sqrt{60}$  

Tags

NGSS.HS-PS3-1