Newton's Gravity Concepts
Kepler's Laws Concepts
Math - Kepler or Newton
Universe Fast Facts
Throwback Problems
100
Increasing the Mass of an object does what to its gravitational force?
Increases it
100
How many foci are in an orbit?
2
100
If the Planets Period (T) is 1 years, what is the approximate Semi-Major Axis Length (a)?
1
100
How big is the Earth compared to the Universe?
So small that it is basically 0
100
What is Velocity?
Distance over time
200
Increasing the distances, does what to the gravitational force?
Decreases it
200
What shape do planets go around the sun?
Ellipse or Oval
200
If the Planets Period (T) is 2 years, what is the approximate Semi-Major Axis Length (a)?
1.58 AU
200
Why don't we know what is at the center of a black hole?
Light cannot escape it
200
What is acceleration?
Velocity over time
300
Increasing the mass does what to the distance?
nothing
300
What is Kepler's 1st law?
All planets move in ELLIPSE, with the Sun at one focus
300
If the Semi-Major Axis Length (a) is 4 AU?, what is the Planet’s approximate period (T)?
8 years
300
How much of the universe is made up of observable matter?
About 6%
300
What is the order of the colors from lowest wavelength the highest?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
400
If the mass and distance increase by the same amount, how is the gravitational force effected?
it decreases
400
When a planet is close to the sun, it moves .......
Faster
400
Determine the force of gravitational attraction between a frog (10 kg) and a 50-kg physics student at a distance of 27 m from earth's center
4.5 x 10^-11 N
400
How long after the big bang did the first atoms form?
100-1000 seconds
400
Why was Math created?
To do physics
500
If the mass is multiplied by 4 and the distance is multiplied by 2, what happens to the gravitational force?
nothing!
500
What is Kepler's second law of orbits?
A line that connects a planet to the sun sweeps out equal areas in equal times.
500
Determine the force of gravitational attraction between the earth (m = 5.98 x 10^24 kg) and a 25-kg physics student at a distance of 5 m from earth's center.
3.9 x 10^14 N
500
What are the 4 types of galaxies?
Spiral, Elliptical, Peculiar, and Irregular
500
Draw a free-body diagram for a person pushing a crate.
