satellite motion

Double the distance between two objects

• 4 times greater gravity attraction
• 4 times weaker gravity attraction
• 2 times weaker gravity
• 2 times greater gravity

What is the force of gravity between two 5000 kg masses that are 0.25 m apart?

• 0.027 N
• 0.106 N
  0.106 N
• 0.0067 N
• 0.057 N

What is the acceleration of a satellite that has an altitude =  3 times the Earth’s radius?

• 3.27 m/s^2
• 1.09 m/s^2
• 2.45 m/s^2
• 0.612 m/s^2

Phobos takes 0.32 days (27,650 seconds) to orbit Mars at a radial distance of 9.38 x 10^6 meters . What is the mass of Mars?

• 6.39 x 10^23 kg
• 7.48 x 10^22 kg
• 3.75 x 10^23 kg
• 4.12 x 10^24 kg

what happens to gravity as distance increases?

• there was never any gravity in space
• it in increases rapidly 
• It decreases rapidly 
• It does not change 

Double the product of the masses of two objects

• 4 times stronger gravity force
• 4 times weaker gravity force
• 2 times weaker gravity force
• 2 times stronger gravity force

Tags

NGSS.MS-PS2-4

As the product of two objects' masses increases, the pull of gravity

• Increases
• Decreases
• Stays the same

Tags

NGSS.MS-PS2-4

Earth's gravitational field extends

• only above and beyond Earth's surface and cancels inside Earth
• both inside and outside Earth and throughout the entire universe
• neither of these

Tags

NGSS.MS-PS2-5

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

Tags

NGSS.MS-PS2-4

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

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

Tags

NGSS.MS-PS2-4