Conservation of Energy and Work

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  

Tags

NGSS.HS-PS3-2

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.HS-PS3-2

At which point is kinetic energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.HS-PS3-2

A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?

• 2000 Joules
• 19,600 Joules
• 19,600 m/s
• 31.3 m/s

Tags

NGSS.HS-PS3-1

If the Total Mechanical Energy is 50J, Potential Energy is 40 J, what is the Kinetic Energy?

• 1 J
• 10 J
• 90 J

Tags

NGSS.MS-PS3-1

Which variable is always constant (doesn't change)?

• mass
• height
• velocity
• None

Tags

NGSS.HS-PS2-1

What is the v in this equation? Choose the one with the CORRECT unit!

• volume (m³)
• velocity (m/s)
• velocity (m/s²)
• volume (v)

What is the g? Choose the one with the correct unit!

• mass (kg)
• gravity (m/s)
• gravity (m/s²)
• grams (g)

Tags

NGSS.HS-PS2-4

At the top of the roller coaster, which energy is ALWAYS present?

• Potential Energy
• Kinetic Energy
• Mechanical Energy
• None

Tags

NGSS.MS-PS3-2

Energy that is stored in a system, ready to be used, is called ____________ energy.

• Kinetic

• Potential

• Conserved

• Power

Tags

NGSS.MS-PS3-2