Energy and Matter

Select the statements that are correct;

• Potential Energy at 1 > 3

• Potential Energy at 2 > 3

• Potential Energy at 3 > 4

• Potential Energy at 4 > 2

Tags

NGSS.MS-PS3-2

This picture shows a tugboat loaded up with coal to a power plant. The following graph shows its speed every minute. At what point is its kinetic energy the greatest?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-2

Which statement best explains why hill 4 is lower than the first hill of a roller coaster ride? If the second hill wasn't lower, the roller coaster train would;

• need more mass to absorb enough potential energy to move up the 2nd hill

• have a higher velocity as it moved down the second hill, making it dangerous

• need a source of energy other than the potential energy to make it up the second hill

• have more kinetic energy as it moved down the second hill, making it dangerous

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

As the mass of the train ____, the expected kinetic energy of the train_____ in proportion to the change of mass.

• decreases, increases

• increases, stays the same

• increases, decreases

• increases, increases

Tags

NGSS.HS-PS3-2

Which describes the potential and kinetic energy of the pendulum at position x?

• Potential energy is lowest and kinetic is highest

• Potential energy is highest and kinetic is lowest

• Kinetic energy is highest and potential is lowest.

• Kinetic energy is highest and potential is highest.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Two cars were added to a six car train and both were filled with students. How does this compare to the original six car train that was also filled with students?

The kinetic energy would___and the velocity would____.

• increase, remain the same

• decrease, remain the same.

• remain the same, remain the same

• increase, decrease

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

If the mass of a train was reduced by 1,650 kg, how would this impact its kinetic energy? The kinetic energy would____.

• increase

• remain the same

• decrease

Tags

NGSS.HS-PS3-2

When calculating an objects kinetic energy, what equation is used?

• KE=mgh

• KE=1/3mv^2

• KE=mv^2

• KE=1/2mv^2

When calculating an objects potential energy, what equation is used?

• PE=1/2mv^2

• PE=mgh

• PE=1/3mv^2

• PE=mg/h

What is the measure of the average kinetic energy of the particles in a material known as?

• heat transfer

• radiation

• temperature

• thermal expansion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4