Mass vs. weight/ law of ug/ circular motion/keplers laws

Mass (kg)

the amount of matter inside an object

Does mass change depending on where you are in the universe?

No! Mass is constant

Weight (N)

The force of gravity acting on a object

Acceleration due to gravity (g) changes/does not change depending on where the object is in the universe

Changes

Another way to say acceleration due to gravity (g)

g-feilds

Where does a gravitational field originate from?

Originates from its property of mass

Value of G

6.67 × 10^-11

G’s value represents how gravity is relatively stong/weak?

weak

The gravitational constant changes/doesn’t change depending on where you are in the universe

doesn’t change

Where does gravitational feilds accelerate towards?

acceleration towards the center of the mass

If all mass produces a gravitational acceleration towards it, why don’t we all accelerate towards one another?

Because the masses aren’t large enough for us to want to accelerate towards one another

True of false: All masses attract each other

True

True or false: Newton’s law of UG is a type of inverse square law

True

Nickname for Newtons law of UG is Law of ___

Gravitation

A property of mass that causes other objects to accelerate when exposed to it

Gravitational field

All masses will be attracted to all other masses

Gravitational force

Centripetal force is directed towards the ___

center

Centripetal acceleration is directed towards the ____

center

What is tangential velocity?

Without centripetal force, the object will move in a straight line cause of inertia

“Centripetal “ in latin:

Center seeking

Centripetal force

The net fforce that “center seeks” an object moving along a circular path

True or false: Centripetal force is a type of force

False! It is not a type of force, it is caused by other forces, like a Net Force

Centrifugal force

The feeling/sensation of an outward force

True or false: Centrifugal force is a type of force

False: It is a fake force

What it centrifugal force cause by?

Inertia→ the tendency of an object to resist changing direction while moving in a circular path

How can an object be accelerating while moving along a circular path if it isn’t speeding uo or slowing down?

Because direction is constantly changing, which makes it move in a circular path

When an object is moving at a constant speed along a circular path, is it moving at a constant velocity?

No because direction is changing

What force keeps our bodies in a circle on the gravitron

normal force

What force causes a car doing donuts in the lot

friction

When an object moves around on an internal axis

Rotates

When an object moves around an external axis

Revolves

Law of ___: all orbits are elliptical in shape

orbits

Law of ___: An object speeds up as it gets closer to what its orbiting and slows down as it gets farther away

Equal areas

Law of __: A planets distance from the sun is proportional to its orbital period

Harmonies

Semi Minor axis location

Half of the Y axis

Semi-major axis

half of x axis

At what point does a planet travel the fastest

Perihelion (“peri close to the sun”

At what point in the orbit does a planet travel the slowest

aphelion