Universal Gravitation and Circular Motion

Which of the following ranks the tensions in the strings from highest to lowest?

• A>C>D>B

• B>D>C>A

• B>C>A>D

• D>A>C>B

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NGSS.HS-PS2-1

Which expression could be used to calculate the force acting on a ball, where m = ball mass, v = ball velocity, and t = time?

• mv/t

• mv²/2

• mv²/t

• mv/2t

Tags

NGSS.HS-PS2-1

A 3.0 N force and a 5.0 N force are acting in opposite directions on the same 5.0 kg ball. What is the magnitude of the acceleration of the ball?

• 0.40 m/s²

• 0.63 m/s²

• 1.6 m/s²

• 2.5 m/s²

Tags

NGSS.HS-PS2-1

A spaceship takes off and travels away from the surface of Earth. Which of these describes how the gravitational force changes between the spaceship and Earth as it travels further away from Earth?

• The gravitational force is directly proportional to the distance between the spaceship and the center of Earth.

• The gravitational force is directly proportional to the square of the distance between the spaceship and the center of

  Earth.

• The gravitational force is indirectly proportional to the distance between the spaceship and the center of Earth.

• The gravitational force is indirectly proportional to the square of the distance between the spaceship and the center of Earth.

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NGSS.HS-PS2-4

The force acting on an object is not changed but the mass of the object is doubled. Which statement BEST describes the resulting change in acceleration of the object?

• The acceleration is decreased to one-fourth of its initial magnitude.

• The acceleration is decreased to one-half of its initial magnitude

• The acceleration is increased to twice its initial magnitude.

• The acceleration is increased to four times its initial magnitude

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NGSS.HS-PS2-1

Planet X has three moons. The gravitational force between the planet and each of its moons is the same. Malina draws the diagram below to compare the masses of the moons and to show their distances from Planet X.

In which of these ways should the diagram be corrected?

• Moon B should be smaller.

• Moon A should be closer to Moon B.

• The orbit of Moon A should be closer to Planet X.

• The orbit of Moon C should be farther away from Planet X.

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NGSS.HS-ESS1-4

NGSS.HS-PS2-4

A student is subjected to a reaction force of 10 N northward from a 5 kg block while pushing the block over a smooth, level surface. Ignoring friction, what is the acceleration of the block?

• 0.5 m/s² southward

• 2 m/s² southward

• 0.5 m/s² northward

• 2 m/s² northward

Tags

NGSS.HS-PS2-1

A space agency sends a probe through space to a planet larger than Earth. The larger planet has the same mass as Earth, but is twice the diameter.

How would the weight of the probe on the larger planet compare to its weight on Earth?

• It would be one-fourth its weight on Earth

• It would be half of its weight on Earth.

• It would be twice its weight on Earth.

• It would be four times its weight on Earth.

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

How do you compare the gravitational force of A from B?

• gravitational force of A is twice that of B

• gravitational force of A is half compared to B

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NGSS.HS-PS2-4

If each wire is rated at holding a maximum tension of no more than 90.0 N, what is the maximum mass of the sculpture?

• 3.06 kg

• 9.0 kg

• 4.8 kg

• 6 kg

Tags

NGSS.HS-PS2-1