Physics Kinetic Energy

The unit of work is

• watt

• hertz

• joule

• pascal

Tags

NGSS.MS-PS3-5

Which graph BEST shows the relationship of kinetic energy to potential energy as a book sits on the edge of a desk?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

A ball is projected into the air. Describe the change(s) in potential and kinetic energy.

• Potential energy decreases and kinetic energy increases.

• Kinetic energy increases and potential energy decreases.

• Potential energy decreases while kinetic energy increases; then kinetic energy decreases and potential energy increases.

• Kinetic energy decreases as potential energy increases; once at the top, potential energy decreases as kinetic energy increases.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How would you describe the relationship between the mass of a car and its kinetic energy?

• As the mass of a car increases, its kinetic energy decreases.

• As the mass of a car increases, its kinetic energy increases.

• As the mass of a car decreases, its kinetic energy increases.

• There is no clear relationship between mass and kinetic energy.

Tags

NGSS.MS-PS3-1

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

• potential to kinetic

• sound to mechanical

• mechanical to heat

• kinetic to potential

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Which graph BEST shows the relationship of kinetic energy (solid line) to potential energy (dotted line) as a hawk dives downward toward its prey and then returns to its original position in the air?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

This graph MOST LIKELY describes the potential energy and kinetic energy of a roller coaster going

• up a hill.

• up a hill and then rolling back down the other side.

• down a hill.

• down a hill and then rolling back up the other side.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

According to the graph, which of the these remains constant throughout?

• Time

• potential energy

• kinetic energy

• total amount of energy

Tags

NGSS.MS-PS3-1

Instead of rolling down the ramp over the step, imagine the ball falls off the back of the ramp directly to the ground. What is the amount of potential energy remaining after the ball lands on the ground?

• 100J

• 0J

• 25J

• 50J

Tags

NGSS.MS-PS3-2

Which type of energy transformation does NOT describe potential energy being changed into kinetic energy?

• A ball falling off a shelf.

• A bike coasting down a hill.

• Releasing a stretched rubber band.

• Compressing a spring.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4