Physics and Universe Review

Acceleration is the rate at which velocity (speed) changes.

• True

• False

A push, pull or twist is the definition for

• motion.

• friction.

• force.

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NGSS.MS-PS2-1

Combining all forces acting on an object is called

• acceleration.

• inertia.

• net force.

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NGSS.MS-PS2-2

Calculate the Net Force.

Remember: Forces Working Against Each Other = SUBTRACT

• 950 Newtons Left

• 950 Newtons Right

• 50 Newtons Left

• 50 Newtons Right

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NGSS.HS-PS2-1

Potential energy is related to 

• position or height of an object
• speed of an object

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NGSS.MS-PS3-2

Kinetic energy is related to 

• position or height of an object
• speed of an object

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

The diagram shows a child on a swing. The child is swinging back and forth between points X and Z, through point Y. Points X and Z are at the same height. Which of the following statements best describes the kinetic energy and the gravitational potential energy of the child?

• The child has no potential energy and no kinetic energy at position X and position Y.

• The child has the same kinetic energy and potential energy at position X and position Y.

• The child has more potential energy and less kinetic energy at position X than at position Y.

• The child has more kinetic energy and less potential energy at position X than at position Y.

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

Which 2 letters have the most kinetic energy

• W & Y
• X & Z

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NGSS.MS-PS3-1

At which point is potential energy greatest?

• W
• X
• Y
• Z

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What is happening at D?

• Stationary
• Accelerating
• Fast steady speed; moving away from the starting position
• Slower steady speed; moving away from the starting position

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NGSS.MS-PS3-1