Quiz Review: Mechanical Energy

Find the mechanical energy of a book that falls to the floor and has a mass of 2 kg. The velocity of the book at 5 meters is 10 m/s.

• 98 J

• 100 J

• 198 J

• 108 J

Tags

NGSS.HS-PS3-1

What is the PE of an elevator on the 1st floor, 2nd floor (4 meters above the ground), and 3rd floor (9 meters above the ground)? The elevator has a mass of 800kg.

• 1st floor: 0 J
  2nd floor: 31,360 J 3rd floor: 70,560 J

• 1st floor:7,840 J 2nd floor: 15,580 J
  3rd floor: 23,520 J

• 1st floor: 0 J
  2nd floor: 3200 J 3rd floor: 7200 J

• 1st floor: -7,840 J 2nd floor: 0 J
  3rd floor: 7,840 J

Tags

NGSS.HS-PS3-1

What is the relationship between velocity and kinetic energy?

• Kinetic energy is directly proportional to velocity.

• Kinetic energy is inversely proportional to velocity.

• Kinetic energy is proportional to the square of velocity.

• Kinetic energy is independent of velocity.

Using the image above: What are the KE and PE of the athlete at point A?

• KE = 0 J

  PE = 0 J

• KE = 1,116 J

  PE = 559 J

• KE = 1,116 J

  PE = 0 J

• KE = 186 J

  PE = 0 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Using the image above, answer the following: The spring constant is 200N/m. Find the Elastic Potential Energy at x=0.

• 0 J

• 400 J

• 900 J

• 3600 J

Tags

NGSS.HS-PS3-1

Using the image above, answer the following: The spring constant is 200 N/m. Find the Elastic Potential Energy at x=-2.

• 400 J

• 200 J

• 800 J

• 100 J

Tags

NGSS.HS-PS3-1

Using the image above, answer the following: The spring constant is 200 N/m. Find the Elastic Potential Energy at x=3.

• 900 J

• 600 J

• 300 J

• 3,200 J

Tags

NGSS.HS-PS3-1

A raindrop with a mass of 0.2 kg is falling at a velocity of -10 m/s and has a mechanical energy of 11 J. How high is the raindrop above the ground?

• 0.5 meters

• 1.0 meters

• 1.5 meters

• 2.0 meters

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

Find the work done by a cat that pushed a mouse 5 meters with a force of 30N.

• 150 Joules

• 30 Joules

• 5 Joules

• 0 Joules

If a roller coaster is at the top of a hill, what type of mechanical energy is at its maximum?

• Kinetic energy

• Potential energy

• Thermal energy

• Electrical energy

Tags

NGSS.MS-PS3-2