Physics

A Child slides from rest down slides A and B. The slides are the same heigh and the coefficient of friction between the slides and the child are the same. Which of the following compares the change in the kinetic energy of the child and the change in potential energy of the child-Earth system?

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Tags

NGSS.HS-PS3-1

• A

• B

• C

• D

• 0.98 J

• 3.8 J

• 7.6 J

• 12.8 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

While the object is continuously oscillating the student determines the maximum speed of the object during two oscillations. The first speed is 3.5 m/s and the second speed is 2.7 m/s. Which of the following could account for the decrease i the object's maximum speed?

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Tags

NGSS.HS-PS3-1

How does the new normal force exerted on the crate compare to F normal

• The new normal force is greater than F normal

• The new normal force is less than F normal

• The new normal force is equal to F normal

• The new normal force is greater or less than Fnormal depending on the angle theta.

Tags

NGSS.HS-PS2-1

As the crate slides a distance d, how does the new gain in kinetic energy compare to the original change in kinetic energy?

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Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

A block on a level surface is attached to one end of a spring, as shown. The other end of the spring is attached to a wall. There is friction between the block and the surface. A person displaces the block from its equilibrium position and releases it. Which of the following shows the mechanical energy E as a function of time t for the system that includes only the block and the system that includes the block and the spring?

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Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Sphere rolls from rest down an inclined plane. 

• B
• C
• D
• E

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

NGSS.HS-PS3-1

NGSS.HS-PS3-2

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1