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why did Newton think that a force must…

What did newton conclude about the for…

If the moon falls why doesn't it get c…

what is meant by tangental velocity

the moon orbits the earth

gravity

satalittes fall around the earth

the velocity of a salattlie

why did Newton think that a force must…

the moon orbits the earth

What did newton conclude about the for…

gravity

Law of universal gravitation

Inverse-square law

Weight

Weightless

Every body in the universe attracts every other body with a f…

A law relating the intensity of an effect to the inverse squa…

The force that an object exerts on a supporting surface (or,…

Being without a support force, as in free fall.

Law of universal gravitation

Every body in the universe attracts every other body with a f…

Inverse-square law

A law relating the intensity of an effect to the inverse squa…

tangential velocity

einstein

aristotle

brahe

sideways velocity perpindicular to the pull of gravity

described gravity in a forth dimension predicted gravity can…

The circular motions of the heavenly bodies are natural need…

complied by state of tables on the plane it's in the 1500s in…

tangential velocity

sideways velocity perpindicular to the pull of gravity

einstein

described gravity in a forth dimension predicted gravity can…

Why are black holes black?

Ordinary stars like our sun will die a…

Large, massive stars will die in a spe…

After the explosion, large, massive st…

Gravity is so strong light cannot escape

White Dwarf

Supernova

Neutron star

Why are black holes black?

Gravity is so strong light cannot escape

Ordinary stars like our sun will die a…

White Dwarf

Who developed the universal law of gra…

If the distance is increased twice as…

If the distance is increase to three t…

If the distance is increased ten times…

Newton

Reduced to 1/4

Reduced to 1/9

Reduced to 1/100

Who developed the universal law of gra…

Newton

If the distance is increased twice as…

Reduced to 1/4

In the phrase "What goes up, must come…

What does the gravitational field do?

What is the strength of the Earth's gr…

What is acceleration

Gravity

Exerts a force that attracts objects towards itself

Acceleration of objects influenced by gravitational field

The rate of change of velocity over time

In the phrase "What goes up, must come…

Gravity

What does the gravitational field do?

Exerts a force that attracts objects towards itself

inertia

mass

weight

equilibrium

The tendency of an object to resist any change in motion.

The amount of matter in an object.

The attractive force due to gravity.

State of balance when the forces acting on an object are equal.

inertia

The tendency of an object to resist any change in motion.

mass

The amount of matter in an object.

Friction acts in which direction?

Newtons third law of motion?

The strength of friction depends on?

How is friction annoying?

The opposite to movement

For every action there is an equal and opposite reaction.

1. How rough the surfaces in contact are... 2. How hard the surf…

Makes machines less efficient.

Friction acts in which direction?

The opposite to movement

Newtons third law of motion?

For every action there is an equal and opposite reaction.

What happens in freefall?

Factors affecting Terminal Velocity

why does it exclude skydivers

Newtons Law of Gravity

the person experiences sense of weightlessness due to no reac…

surface area, viscosity, weight of object

they are not a sphere, too large, air flow is turbulent, movi…

each mass attracts the other w/ a F directly proportional to…

What happens in freefall?

the person experiences sense of weightlessness due to no reac…

Factors affecting Terminal Velocity

surface area, viscosity, weight of object

Centrifugal force

Centrifugal force will never

The only force acting on an orbiting p…

Orbiting projectile is in

A force that seems to push an object to the outside of a circle

Appear on a free body

Gravity

Free fall

Centrifugal force

A force that seems to push an object to the outside of a circle

Centrifugal force will never

Appear on a free body

Kinetic friction

Projectile

Trajectory

Centripetal acceleration

The force exerted on one surface by a second surface when the…

An object shot through the air, such as football, that has in…

Path of projectile through space

The center-seeking acceleration of an object moving in a circ…

Kinetic friction

The force exerted on one surface by a second surface when the…

Projectile

An object shot through the air, such as football, that has in…

Gravitaional force and field

Why do things fall?

Changing theories

Definitions

Book page 257-262

Aristotle: things reach their natural resting position... Out of…

Explain what is meant by a force field... Region where a force a…

Force field... A region where a force acts. Strength of field va…

Gravitaional force and field

Book page 257-262

Why do things fall?

Aristotle: things reach their natural resting position... Out of…

The greater the masses of interacting…

Tripling the distance between two obje…

If the mass of the Earth somehow incre…

A black hole is...

the greater the gravitational force between them

divides the gravitational force between them by 9

increase

remains of a giant star that has undergone gravitational coll…

The greater the masses of interacting…

the greater the gravitational force between them

Tripling the distance between two obje…

divides the gravitational force between them by 9

Gravity

Spacetime

Newton's 1st Law of Motion:

Why doesn't the Moon crash into Earth?

Distortions in spacetime due to the presence of mass. Means b…

Spacetime is the four dimensional fabric of the Universe. It'…

Object at rest tends to stay at rest unless acted on by an ou…

The Moon has tangential velocity

Gravity

Distortions in spacetime due to the presence of mass. Means b…

Spacetime

Spacetime is the four dimensional fabric of the Universe. It'…

The force of attraction between all ob…

The more distance between objects, the…

The more massive the objects are, the_…

A 10kg rock and a 20kg rock free fall…

gravity

less

more

They both hit at the same time

The force of attraction between all ob…

gravity

The more distance between objects, the…

less

What is the law if universal gravitati…

What factors determine the gravitation…

How far away would one have to travel…

Why do objects fall?

Gravity, as stated by newton, is a force that attracts every…

Mass: greater the mass, the greater the gravitational force b…

According to newtons law of universal gravitation, an object…

Because everything on earth is attracted to earth because of…

What is the law if universal gravitati…

Gravity, as stated by newton, is a force that attracts every…

What factors determine the gravitation…

Mass: greater the mass, the greater the gravitational force b…

formula for... **gravitational force**... (New…

How is the acceleration due to gravity…

Kepler's 1st Law:... Although planetary o…

Kepler's 2nd Law:... What do you know abo…

F = gravitational force... G = constant... m1, m2 = masses... r = dist…

g is inversely proportional to the square of the distance (fr…

Elliptical (ellipse).... S = sun... P = planet

Equal areas are swept in equal times.... (In the figure, areas a…

formula for... **gravitational force**... (New…

F = gravitational force... G = constant... m1, m2 = masses... r = dist…

How is the acceleration due to gravity…

g is inversely proportional to the square of the distance (fr…

Newton's law of universal gravitation

[Newton's law of universal gravitation…

[Newton's law of universal gravitation…

[Newton's law of universal gravitation…

Mass of objects 1 and 2 in kg

The gravitational force

The distance between the centres of objects 1 and 2 in metres

Newton's law of universal gravitation

[Newton's law of universal gravitation…

Mass of objects 1 and 2 in kg

The center of mass (equation)

Newton's first law

Newton's second law

Newton's third law,

is the average distance, weighted by mass

inertia... The law of inertia basically states the following: w…

F = ma

orces equal and opposite

The center of mass (equation)

is the average distance, weighted by mass

Newton's first law

inertia... The law of inertia basically states the following: w…

Rotation

Revolution

Axis

Period

Turning around an internal axis

Turning around an external axis

An imaginary line around through which turning takes place

The time to go around once; usually measured seconds

Rotation

Turning around an internal axis

Revolution

Turning around an external axis

Geocentric

Heliocentric

Empirical

Law of Orbits

Ptolemy's theory that the earth is the center of the solar sy…

Copernicus' theory that claims the sun, not the earth was the…

Kelper's three laws - drawn from observation rather from laws…

The first law; The orbit of every planet has the shape of an…

Geocentric

Ptolemy's theory that the earth is the center of the solar sy…

Heliocentric

Copernicus' theory that claims the sun, not the earth was the…

moon phases from earth

An object in elliptical orbit achieves…

Jumping into a hole through the earth,…

If NASA gave a spacecraft tangential(h…

it is closest to its central body

the earth's center

orbit the earth in an elliptical path

moon phases from earth

An object in elliptical orbit achieves…

it is closest to its central body

force of gravitational attraction

universal gravitational constant

mass of earth

radius of earth

Fg=G[(m₁m₂)/r²] ... (universal gravitational constant•(mass 1•m…

6.67x10^-¹¹

5.98x10²⁴ kg

6.37x10⁶ m

force of gravitational attraction

Fg=G[(m₁m₂)/r²] ... (universal gravitational constant•(mass 1•m…

universal gravitational constant

6.67x10^-¹¹

Describe the tide.

Black holes

The pedigree Orbit

The apogee orbit

the tide occurs when the moon is halfway between a new moon a…

A mass that has collapsed. It creates a density that is enorm…

The point at which the elliptical orbit is nearest to the cen…

The point in which the center of the orbit is farthest from t…

Describe the tide.

the tide occurs when the moon is halfway between a new moon a…

Black holes

A mass that has collapsed. It creates a density that is enorm…

Inertial mass

Keplers second law

Gravitational mass

Gravitational field

Amount of resistance an object has to any application of force

States that an imaginary line drawn between a planet and the…

When it is increases gravitational force will also increase ;…

Region around the earth where objects experience a force due…

Inertial mass

Amount of resistance an object has to any application of force

Keplers second law

States that an imaginary line drawn between a planet and the…

spring tide

inverse square law

law of universal gravitation

Newton reasons that the gravitational…

A high or low tide that occurs when the sun Earth and Moon ar…

A tide that occurs when the moon is halfway between a new Moo…

For any pair of objects, each object attracts the other objec…

Reduced by distance.

spring tide

A high or low tide that occurs when the sun Earth and Moon ar…

inverse square law

A tide that occurs when the moon is halfway between a new Moo…

Displacement

Height

Equations of Motion (Downward)

Equations of Motion (Upward)

Formula (m)... y = y2 - y1

Formula (m)... h = h2 - h1

v = u - gt ... v = y0 + ut + (1/2)gt^2... v^2 = u^2 - 2g (y - y0)…

v = u + gt ... v = y0 + ut + (1/2)gt^2... v^2 = u^2 + 2g (y - y0)…

Displacement

Formula (m)... y = y2 - y1

Height

Formula (m)... h = h2 - h1

velocity

acceleration

deceleration

frame of reference

rate of change in position (plus direction)

increase in speed or velocity... "Speeding up"

decrease in speed or velocity... "slowing down"

object used to detect motion... example: the ground, the sun, et…

velocity

rate of change in position (plus direction)

acceleration

increase in speed or velocity... "Speeding up"

What is a light year?

What is a galaxy?

Is the Earth's gravitational field rad…

Weight =

6,000,000,000,000 miles or 6 million million miles

A collection of stars and planets held together by gravity

Radial because the further away from the Earth you get the we…

Mass x Gravitational field strength... Mass x 10 (on Earth)

What is a light year?

6,000,000,000,000 miles or 6 million million miles

What is a galaxy?

A collection of stars and planets held together by gravity

a point inside an object around which…

a point around which gravity pulls equ…

CM & CG are almost always__________

for an object to balance the pivot poi…

center of mass

center of gravity

in the same place

under the center of gravity

a point inside an object around which…

center of mass

a point around which gravity pulls equ…

center of gravity

What is Gravity?

What is weight the measure of?

How do we measure Gravity?

What is Gravity the force in between?

the force of attraction that pulls objects together

gravitational force

by using a scale

any matter in the universe

What is Gravity?

the force of attraction that pulls objects together

What is weight the measure of?

gravitational force

What is the phase of the moon when the…

Who can see a lunar eclipse?

What is the phase of the moon when the…

Who can see a solar eclipse?

Full moon

Only people on the night side of the earth

New moon

Only people in the shadow of the earth

What is the phase of the moon when the…

Full moon

Who can see a lunar eclipse?

Only people on the night side of the earth

Mass

Matter

Weight

Gravity

Amount of matter an object has

Something that has mass and takes up space (Kg)

The amount of mass of an object...It is dependent upon gravit…

Tendency of objects with mass to accelerate towards each other

Mass

Amount of matter an object has

Matter

Something that has mass and takes up space (Kg)

gravity

gravity field

freefall

air resistance/ drag

the weakest of the four fundamental forces, a mutual attracti…

...

the natural downward motion of falling objects under the infl…

the resistance objects feel when hitting against air molecule…

gravity

the weakest of the four fundamental forces, a mutual attracti…

gravity field

...

What is Newton's law of universal grav…

What factors affect GRAVITATION?

How does mass affect the force of grav…

How does distance affect the force of…

Every body in the universe attracts every other body

The mass of the two objects being considered.... The distance be…

Directly related; the greater the mass, the greater the force…

Inverse relationship; specifically, it follows the inverse sq…

What is Newton's law of universal grav…

Every body in the universe attracts every other body

What factors affect GRAVITATION?

The mass of the two objects being considered.... The distance be…

gravity

acceleration due to gravity

air resistance

terminal velocity

force that pulls all objects together... "closer the objects, th…

9.8 m/s/s on earth (if it weren't for air resistance)

force that opposes objects as they travel through the air

fastest a falling object can go due to air resistance

gravity

force that pulls all objects together... "closer the objects, th…

acceleration due to gravity

9.8 m/s/s on earth (if it weren't for air resistance)

velocity is always _____ to the circle…

If a object is moving in a circle and…

centripetal forces that could be on a…

you can go at a _______ around a circle

tangential

in a straight line (Newtons First Law)

gravity, electricity and magnets, tension, friction, normal f…

constant speed

velocity is always _____ to the circle…

tangential

If a object is moving in a circle and…

in a straight line (Newtons First Law)

tangential speed

rotational speed

rotational intertia

torque

the linear speed tangent to a curved path, such as in circula…

the number of rotations or revolutions per unit of time

that property of an object that measures its resistance to an…

the product of force and lever-arm distance which tends to pr…

tangential speed

the linear speed tangent to a curved path, such as in circula…

rotational speed

the number of rotations or revolutions per unit of time

Define gravity.

Name Kepler's three laws.

State the law of orbits.

State the law of areas.

a mutual attractive force between any objects that have mass

law of orbits, law of areas, law of periods

all planets move in elliptical orbits with the sun at one focus

a line connecting the sun and a planet sweeps out equal areas…

Define gravity.

a mutual attractive force between any objects that have mass

Name Kepler's three laws.

law of orbits, law of areas, law of periods

Law of universal gravitation

Inverse-square law

Weight

Weightless

For any part of objects, each particle attracts the other obj…

The law that relates the intensity of an effect to the invers…

the force that an object extras on supporting surface

the condition in which an object experiences no support force…

Law of universal gravitation

For any part of objects, each particle attracts the other obj…

Inverse-square law

The law that relates the intensity of an effect to the invers…

gravity

Newton's apple

Newton's Law of Universal Gravitation

Size of Force Depends On

-a force of attraction between two objects (pull)... -can only s…

-false... -tried to study stars and moon

-all objects in the universe attract each other through gravi…

-masses of two objects... -distance between two objects

gravity

-a force of attraction between two objects (pull)... -can only s…

Newton's apple

-false... -tried to study stars and moon