Gravitition

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

Newton said that any two masses will...

• combine into a larger mass.

• attract each other.

• create gravitational fields.

• push each other apart.

According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with...

• a stronger force than the Moon attracts the Earth.

• a weaker force than the Moon attracts the Earth.

• the same force as the Moon attracts the Earth.

• a force that is sometimes stronger and other times weaker than the Moon attracts the Earth.

The distance between the two masses in the previous situation is halved. Determine the gravitational force in this new situation.

• 20 N

• 40 N

• 80 N

• 160 N

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

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

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

If I double the distance between two objects, what happens to their gravitational Force?

• 4x bigger
• 4x smaller
• 2x bigger
• 2x smaller

The path a planet travels around the sun is called its 

• orbit
• ellipse
• barycenter
• precession

The gravitational force between two bodies of masses m1 and m2 separated by distance r is F. State the effect on the gravitational force when m1 increases twice.

• 2F

• 1/2 F

• 4F

• 4F