Energy Transformations Jay Physics

When no friction or external applied forces are present, the total mechanical energy of a system will

• Increase

• Decrease

• Remain Constant

When positive work by an external force is done on a system, the energy of the system will ________.

• Increase

• Decrease

• Remain the same

Tags

NGSS.HS-PS3-1

When negative work (by friction or external forces) is done on a system, the total mechanical energy will ______.

• Increase

• Decrease

• Remain the same

Read the scenario below and use the image above to Identify the correct order of energy transformations: "A pendulum of mass m with an initial velocity (v₀) of zero starts at position A and moves to position C."

• U_g + K → K + U_g

• U_g → K → U_g

• K → E_int

• K → U_g → K

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Read the scenario below and use the image above to Identify the correct order of energy transformations: "A block of mass m with an initial velocity of 6 m/s starts to move up a friction-less ramp and reaches a maximum height of 1.4 meters".

• U_g + K → K + U_g

• U_g → K → U_g

• K → E_int

• K → K + U_g → U_g

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Read the scenario below and use the image above to Identify the correct order of energy transformations: "A spring is compressed Δx meters. The spring applies a force on a skater which causes the skater to move to the right. Friction within the wheels is negligible"

• U_s → K + U_g → K

• U_s→ K → U_g

• K → E_int

• U_s → K

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-3

Read the scenario below and use the image above to Identify the correct order of energy transformations: "A spring is compressed a distance d . The spring applies a force on block causing the block to leave the spring at a velocity v to the left. The block comes to a stop a distance D from the edge of the spring.

• U_s → K + U_g → K

• U_s→ K → U_g

• U_s → K → E_int

• U_s → K

Read the scenario below and use the image above to Identify the correct order of energy transformations: "A block of mass m initially at rest on a frictionless table is pushed by a spring that is compressed a distance X. It travels some horizontal distance D as it moves off the table of height h."

• U_g + U_s → K + U_g → K

• U_g + U_s→ K → U_g

• K → E_int

• U_g → K

Tags

NGSS.HS-PS2-1

Match the best statement for the image using the OVERALL energy transformation of: U_g → K

• Block slides down a surface of negligible friction.

• Block slides down a rough surface.

• Block moves up a rough ramp with an initial velocity.

• Block moves up a smooth ramp with an initial velocity.

Tags

NGSS.HS-PS3-2

Match the best statement for the image using the OVERALL energy transformation of: K → U_g

• Block slides down a surface of negligible friction.

• Block slides down a rough surface.

• Block moves up a rough ramp with an initial velocity and moves back down.

• Block with initial velocity v naught moves up to a height h. Friction is negligible.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2