4.2 Universal Gravitation and Constant

What states that "every object in the universe attracts every other object"?

• Law of Universal Gravitation
• Newton's First Law of Motion
• My mother
• Inertia & gravity

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Which of the following is Newton's Law on Gravitation?

• F=Gm₁m₂/r
• F = Gm₁m₂/r²
• F = Gm₁m₂/2r
• F = m₁m₂/2r

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Force of gravity is inversely proportional to

• Mass
• Weight
• Distance
• Time

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NGSS.HS-PS2-4

Force of gravity is directly proportional to

• Mass
• Weight
• Distance
• Time

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NGSS.HS-PS2-4

Which of the following would be a proper setup for this problem: A 60 kg person is standing on earth's surface (radius = 6.4x10⁶ m). The mass of earth is 6x10²⁴ kg.

• $\frac{\left(6.67x10^{-11}\right)\left(60\right)\left(6x10^{24}\right)}{\left(6.4x10^6\right)^2}$

• $\frac{\left(6.67x10^{-11}\right)\left(60\right)\left(6.4x10^6\right)}{\left(6x10^{24}\right)^2}$

• $\frac{\left(6.67x10^{-11}\right)\left(60\right)\left(6x10^{24}\right)}{\left(6.4x10^6\right)^{ }}$

• $\frac{\left(60\right)\left(6x10^{24}\right)}{\left(6.4x10^6\right)^2}$

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NGSS.HS-PS2-4

The value of Universal Gravitational constant is

• 6.673X10^-11 Nm^-2kg²

• 6.673X10^-11 Nm²kg²

• 6.673X10^-11 Nm² kg^-2

• 6.673 x10^-11 N m^-2 kg^-2

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NGSS.HS-PS2-4

what is the gravitational force between two 10 kilogram balls that are 5 meters apart from each other?

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What is the gravitational force between two identical 50,000 kg asteroids whose centers of mass are separated by 1000 m?

• 2500 N

• 1.67 x 10^-4 N

• 1.67 x 10^-4 N

• 1.67 x 10^-7 N

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NGSS.HS-PS2-4

Calculate the force of gravity (F) between two objects whose masses are m₁ = 100 kg and m₂ = 1000 kg if they are separared by a distance of d = 500 m.

• 2.67 * 10^-11 N

• 0.4 N

• 6.67 * 10^-11 N

• 1.3 * 10^-8 N

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NGSS.HS-PS2-4

Two masses 8000 kg and 1500 kg are 1.5 m apart. Find their gravitational pull.

• 3 N

• 0.0003 N

• 3000 N

• 30 N

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NGSS.HS-PS2-4