Potential and Kinetic Energy

The amount of kinetic energy an object has depends on which feature of the object?

• motion

• position

• gravity

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

This diagram shows a skier going down a hill. Which statement best describes the skier?

• The skier as potential and kinetic energy

• the skier has only kinetic energy

• the skier has only potential energy

Tags

NGSS.MS-PS3-1

Which statement best compares potential and kinetic energy?

• Objects always have more potential energy than kinetic energy.

• kinetic energy increases and potential energy decreases when the velocity of an object increases

• only potential energy increases when an object's height increases

A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaster? (Formula: PE = mgh)

• 800 kg

• 7840 kg

• 8000 kg

Tags

NGSS.MS-PS3-2

A sled is at rest at the top of a slope 2 m high. The sled has a mass of 45 kg. What is the sled’s potential energy? (Formula: PE = mgh)

• 90 J

• 56.8 J

• 882 J

Ella has a mass of 56 kg, and Tyrone has a mass of 68 kg. Ella is standing at the top of a skateboard ramp that is 1.5 meters tall. Which conclusion is best supported by the given information?

• If Tyrone stands at the top of the same ramp, his potential energy will be less than Ella’s.

• If Tyrone stands at the top of a 1 m high ramp, his potential energy will be greater than Ella’s.

• If Tyrone stands at the top of a 2m high ramp, his potential energy will be greater than Ella's

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

Which two factors are used to calculate the kinetic energy of an object?

• gravity and velocity

• velocity and mass

• mass and volume

Tags

NGSS.MS-PS3-1

What is the kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s? (Formula:)

25 J

• 25 J

• 5 J

• 50 J

Tags

NGSS.MS-PS3-1

A car is moving at 12 m/s and has a mass of 600 kg. What is the kinetic energy of the car? (Formula: )

• 36,300 J

• 43,200 J

• 28,000 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

The diagram shows a ball resting at the top of a hill.

Which statement best describes the energy in this system?

• The kinetic energy in the system is greatest at X.

• The potential energy of the system is greatest at X

• The total energy in the system decreases as the ball moves from X to Y.

Tags

NGSS.MS-PS3-2