Newton's law of universal gravitation

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

Tags

NGSS.HS-PS2-4

Luke Skywalker has a mass of 13 kg and weight of 127.4 N on earth. Find his weight on the Endor moon. Acceleration on Endor due to gravity is 2 m/s/s.

• 254.8 N
• 13 kg
• 26 N
• 127.4 kg

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The amount of matter in an object

• mass
• weight
• inertia
• gravity

Tags

NGSS.MS-PS1-1

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

The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.

• gravity
• friction
• a strong force
• electromagnetic force

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Why did Newton think that there was a force acting on the moon?

• Because the moon always keeps one side toward Earth
• Because the moon moves in a curved path
• Because there is no air on the moon
• Because the moon is moving

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

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

Tags

NGSS.MS-PS2-4

Gravity attracts all objects towards one another.

• False
• True
• It depends
• I don't care

Tags

NGSS.MS-PS2-4

Any object with mass is surrounded by a gravitational field.

• True
• Fallse
• False
• Tru

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5