Conservation of Energy

Where is the car moving fastest?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS2-2

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

What is mechanical energy?

• It is what metal creates when heated.
• All potential and kinetic energy in a system.
• It is motion of all matter.
• Energy of momentum.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

What does kinetic energy depend on?

• The weight and volume of an object
• The buoyancy of an object
• The mass and speed of an object
• The furriness of an object

Tags

NGSS.MS-PS3-1

When my velocity triples, my kinetic energy increases by ______ times.

• 9
•  3 
• 1.5
• 4.5

Tags

NGSS.MS-PS3-1

An object is speeding up when: (Choose All That Apply)

• it is gaining kinetic energy.

• it is losing kinetic energy.

• it is gaining gravitational potential energy.

• it is losing gravitational potential energy.

Tags

NGSS.HS-PS3-1

Calculate the PE of a 2 kg cat perched 10 meters above the ground. 

• 20 J
• 200 J
• 2.04 J
• 200 W

Tags

NGSS.MS-PS3-2

Calculate the Kinetic Energy (KE) of a girl whose mass is 50 kg who is moving at 4 m/s.

• 200 J
• 800 J
• 400 J
• 100 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Explain what happens to the potential energy of a rock as it falls off the side of a cliff.

• The kinetic energy decreases as the potential energy increases.
• The kinetic energy decreases as the potential energy decreases.
• The potential energy decreases as the kinetic energy increases.
• The potential energy decreases as the kinetic energy decreases. 

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

If a pendulum has 20 J of potential energy at point 1, how much kinetic energy will it have a point 3?

• 0 J

• 10 J

• 20 J

• 30 J

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4