Chapter 13: Law of Universal Gravitation (5/28)

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

What is the Universal law of gravitation equation? 

• G=F ⋅ m⋅m2/r²
• F=G ⋅ m⋅m₂/(r)²
• F=G ⋅ r²/m⋅m₂
• G=F ⋅ r²/m⋅m₂

The law of universal gravitation is credited to whom?

• Einstein
• Galileo
• Darwin
• Newton

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass

• matter

• distance

• weight

Gravity attracts all objects towards one another.

• False
• True
• It depends

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

F = G (m1 x m2) / r^2

• 2500 N

• 3.3 x 10^-12 N

• 1.67 x 10^-4 N

• 1.67 x 10^-7 N

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

Gravity is the force objects put on each other because of their ______.

• Mass
• Friendliness
• Acceleration
• Speed

Which configuration will result in the greatest gravitational force?

• small masses far apart

• large masses far apart

• small masses close together

• large masses close together

Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance? 

• F/3
• F/2
• F/6
• F/9