This fruit made Newton think that the moon is falling toward the Earth.
What is an apple
100
True or False: The force of gravity is inversely proportional to the distance.
What is False. It is inversely proportional to the distance SQUARED!
100
The gravitational field can be related to what other field?
What is a minefield or a magnetic field
100
Why are planets round?
Gravity is pushing mass on all sides equally creating a sphere.
100
Objects 1 and 2 attract each other with a gravitational force of 18.0 N. If the mass of Object 1 is doubled, then the new gravitational force will be _____ units
What is 36 N
200
If a cannonball is fired at a high enough speed, what will happen?
It will orbit the Earth
200
True or false: the force of gravity is proportional to mass.
True
200
Do astronauts floating in space have gravity?
What is yes. They have mass, so they have gravity.
200
True or False, every planet has a gravitational pull on each other.
True.
200
Objects 1 and 2 attract each other with a gravitational force of 18.0 N. If the mass of Object 1 is halved, then the new gravitational force will be _____ N
9 N
300
Newton's theory of gravitation confirmed this about the solar system
The sun is in the center with planets revolving (i.e. heliocentric, Copernican theory)
300
True or False: The force of gravity is very small.
True
300
How much does a person weigh in a free fall?
What is zero N (zero lbs)
300
What two forces determine the size of a star?
gravitational and thermonuclear (fusion)
300
Objects 1 and 2 attract each other with a gravitational force of 72.0 N. If the distance separating Objects 1 and 2 is doubled, then the new gravitational force will be _____ N
What is 18 N
400
This velocity is required to keep an object in orbit
Tangential (sideways velocity)
400
Would you weigh more or less if you are standing at the top of a mountain compared to standing at the shore.
You would weigh less because you are farther away from the Earth's center of gravity.
400
How much does a person weigh at the center of the Earth?
What is zero N
400
What are two factors that cause a black hole. (Double points)
1: No more fuel for nuclear fusion
2: Star must be massive enough for it to collapse.
400
Objects 1 and 2 attract each other with a gravitational force of 36.0 N. If the distance separating Objects 1 and 2 is changed to one-third the original value, then the new gravitational force will be _____ N.
324 N
500
How far does the moon's orbit fall that lies below the straight-line distance?
1.4 mm
500
Two objects with a mass of 1 kg each are 1 meter apart. What is the force of gravity between them?
6.67x10^-11 N
500
What is the gravitational field at an object's center of gravity?
What is zero.
500
How strong is a black hole's gravitational field outside of the star's initial radius?
The same strength as the original star.
500
Objects 1 and 2 attract each other with a gravitational force of 72.0 N. If the mass of Object 1 is one-fourth the original value AND the mass of object 2 is tripled AND the distance separating Objects 1 and 2 is halved, then the new gravitational force will be _____ N.