8.2 Physics Review

An object that has kinetic energy must be

• in motion
• stopped
• at an elevated position
• at rest

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

Which best explains the relationship between the speed and energy of an object?

• As an object's speed increases, its energy increases.
• As an object's speed decreases, its energy increases.
• As an object's speed increases, its energy remains constant.
• As an object's speed increases, its energy decreases.

Tags

NGSS.MS-PS3-1

Cars A, B, C, and D are traveling at different speeds in four different lanes on the highway. Evaluate the data and select the list ordering cars with the MOST energy to the LEAST energy?

• B, D, C, A
• A, C, D, B
• C, D, A, B
• A, D, C, B

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A box slides from the top of a ramp to the bottom, its maximum potential energy is located

• at the top
• equal at all locations
• at the bottom
• at the exact middle of the ramp

A pole vaulter runs forward, plants his pole, rises in the air and lands. What point represents his greatest amount of gravitational potential energy?

• just before he starts to fall to the ground
• ater take-off as the pole expands and lifts the vaulter toward the bar
• when he initially lands
• as he runs forward to plant the pole

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

Point B represents a distance half-way down the ramp. If the ball rolls down the ramp, how much potential energy has been converted to kinetic energy at point B?

• 50 J
• 0 J
• 25 J
• 100 J

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NGSS.MS-PS3-2

NGSS.MS-PS3-1

NGSS.MS-PS3-4

You can use a small marble with a mass of 15g or a large marble with a mass of 20g on an energy lab track. What should you do to give your marble the most potential energy?

• They should use a large marble with the ramp at a 75° angle.
• They should use a small marble with the ramp at a 60° angle.
• They should use a small marble with the ramp at a 45° angle.
• They should use a large marble with the ramp at a 60° angle.

Tags

NGSS.MS-PS3-2

At what point in the swing of the pendulum is the potential energy completely converted into kinetic energy?

• B
• A
• C
• D

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

NGSS.MS-PS3-4

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
• kinetic to potential
• mechanical to heat

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

As time passes, which of these is decreasing?

• Amplitude
• Crest
• Wavelength
• Trough

Tags

NGSS.MS-PS4-1