6th Graders CBA Review

The diagram below shows a man fastened in a car seat while driving.

Based on Newton's law of action-reaction, which arrow represents the force that the seat belt would exert on the man's body if he had to slam on the brakes?

• W

• X

• Y

• Z

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NGSS.MS-PS2-1

A skater pushes off a wall and skates backward for a few meters before stopping.

What statement best describes an action/reaction force pair in this situation?

• The wall pushes on the skater when the skater pushes on the wall

• The wheels slow down, and the skater stops

• The friction of the floor helps the skater travel farther

• The skater pushes on the wall and the wheel exert a force on the floor to begin turning

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NGSS.MS-PS2-1

Select the point on the image where the ball will have the greatest kinetic energy.

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NGSS.MS-PS3-4

NGSS.MS-PS3-1

The diagram models the forces acting on a box.

Which of the following best describes the motion of the box?

• The box is moving downward with increasing speed.

• The box is moving with constant speed to the right.

• The box is moving with constant speed to the left.

• The box is moving upward with increasing speed.

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NGSS.MS-PS2-2

Bobby has a toy car that is sitting at rest on the floor. He decides to play with his toy car and pushes it with 3 newtons to the right. Bobby's friend Sam also decides to play with the toy car and pushes it with 6 newtons to the left at the exact same time.

What is the Net Force of the Car?

• 3 Newtons to the Left

  <---

• 3 Newtons to the Right

  --->

• 6 Newtons to the Left

  <---

• 9 Newtons to the Right

  --->

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the Net Force of this box?

(unit is included in the answer)

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

What direction will the box be moving?

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Is this object Balanced or Unbalanced?

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NGSS.MS-PS2-2

Marshall and his friends like to skateboard in an empty swimming pool. The picture below shows a cross-section of the swimming pool. Several points along Marshall's path have been labeled.

At which point is Marshall's gravitational potential energy the greatest?

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NGSS.MS-PS3-2

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GRAVITATIONAL Potential Energy is affected by which of the following?

• An object's position

• Whether or not an object plays Fortnite

• How big an object is

• If an object reacts to another element or not

Tags

NGSS.MS-PS3-2