KE & PE Review

Which statement best defines energy in physics?

• The ability to cause change or do work

• The amount of matter in an object

• The resistance to motion in materials

• The rate at which distance changes

Tags

NGSS.HS-PS3-2

A roller coaster car at the top of a hill primarily has which form of energy, measured in Joules (J)?

• Electrical energy from circuits

• Thermal energy from friction

• Potential energy that is stored

• Kinetic energy from motion

Tags

NGSS.MS-PS3-2

Which statement best defines kinetic energy for a moving object?

• Energy stored by object at rest

• Energy created from chemical bonds

• Energy lost during any collision

• Energy due to motion of an object

Tags

NGSS.MS-PS3-1

Which list shows forms commonly associated with kinetic energy?

• Gravitational, chemical, nuclear, elastic

• Static, potential, nuclear, elastic

• Nuclear, elastic, gravitational, chemical

• Thermal, electrical, electromagnetic, sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A 62 kg jogger moves at 3.0 m/s. What is the jogger’s kinetic energy? (Use KE = 1/2 mv²)

• 93 J

• 31 J

• 558 J

• 279 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which change increases an object’s kinetic energy the most, assuming other quantities stay constant?

• Halving mass while velocity stays the same

• Doubling mass while velocity stays the same

• Doubling velocity while mass stays the same

• Reducing velocity by one-half with same mass

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A toy car has a mass of 0.50 kg and moves at 6.0 m/s. What is its kinetic energy? (Use KE = 1/2 mv²)

• 9 J

• 6 J

• 36 J

• 18 J

Tags

NGSS.MS-PS3-1

A baseball of mass 0.149 kg travels at 41.0 m/s. Calculate the kinetic energy. (Use KE = 1/2 mv²)

• 75 J

• 105 J

• 125 J

• 155 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-4

A stone has 390 J of kinetic energy and moves at 12 m/s. What is the stone’s mass?

(Use KE = 1/2 mv²)

• 5.4 kg

• 4.0 kg

• 6.2 kg

• 3.4 kg

Tags

NGSS.MS-PS3-1

Which statement best defines potential energy in physical systems?

• Energy of motion during movement of objects

• Thermal energy from rapid particle vibrations

• Energy lost from friction within a system

• Stored energy due to position or configuration

Tags

NGSS.MS-PS3-2