Physics - 12/9/21

If the mass of either m₁ or m₂ is increased then the force of gravitation between them will...

• increase

• decrease

• stay the same

If the distance between 2 masses is increased then the force of gravitation between them will...

• increase

• decrease

• stay the same

How is the gravitational force between to objects related to their mass

• They are directly proportional

• They are inversely proportional

• They do not affect each other

• They are equal

Is it true that the moon falls?

• No, it could have fallen by now.

• No, there is no good explanation as to why

• Yes, the moon is falling around the earth due to its tangential velocity.

• Yes, the moon is falling straight down.

If the sun's mass is 2.0x10³⁰ kg, and its radius is 7.0 x 10⁸ m, what is the strength of its gravitational field, "g"?

• 9.8 m/s²

• 272.2 m/s²

• 27.2 m/s²

• 200 m/s²

A person who is 1000N on the surface of the earth will weigh how much at twice the distance in the atmosphere.

• 500 N

• 250 N

• 2000 N

• 4000N

Find the distance between two objects whose masses are m₁ = 4,500 kg, and m₂ = 8,700 kg; if the gravitational force between them is F = 2.0 x 10^-8 N.

• 130565.25 m

• 361.34 m

• 0.19575 m

• 0.783 m

The law of universal gravitation is credited to whom?

• Einstein
• Galileo
• Darwin
• Newton

Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.

• 2.96x10^-9N

• 3.00x10^-6N

• 2.22x10^-9N

• 2.23x10^-8N

Which of the following formulas is the correct equation for the law of Universal gravitation?

• $F=\frac{GM_1M_2}{d^2}$

• $F=mg$

• $F=\frac{Gd^2}{m_1m_2}$

• F= $F=\frac{KQ_1Q_2}{d^2}$