Energy and Conservation Laws

What kind(s) of energy is(are) in a person climbing a ladder?

• Potential

• Kinetic

• Both

• Need the mass of the person to determine.

Tags

NGSS.HS-PS3-2

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

• The PE and KE increase and decrease together

• The PE decreases while the KE increases

• Impossible to know without knowing the mass

• The PE and the KE decrease and increase together.

At which point is potential energy greatest?

• W
• X
• Y
• Z

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

• The total amount of energy is conserved

• The total amount of energy is less after a reaction

• The total amount of energy is more after a reaction

• Need the mass of the object to determine if energy is conserved.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-7

NGSS.HS-PS3-2

NGSS.HS-PS3-4

When velocity triples, kinetic energy increases by ______ times. KE =1/2mv²

• 9

• 3

• 1.5

• 4.5

Tags

NGSS.HS-PS3-2

What is the Total Mechanical Energy at point A?

• 500,000 J

• 400,000 J

• 200,000 J

• 50,000 J

Tags

NGSS.HS-PS3-1

What is the Kinetic Energy at point B?

• 500,000 J

• 400,000 J

• 300,000 J

• 50,000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What is the Kinetic Energy at point C?

• 500,000 J

• 400,000 J

• 300,000 J

• 50,000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What is the Kinetic Energy at point D?

• 500,000 J

• 250,000 J

• 300,000 J

• 50,000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What is the GPE at point E?

• 500,000 J

• 250,000 J

• 300,000 J

• 100,000 J

Tags

NGSS.HS-PS3-1