He proposed that our solar system is helio - centric
What is Copernicus
100
Force acting on something
What is the variable F
100
Movement around object at constant speed around circle with fixed radius
What is uniform circular motion
100
Orbits are circular
What is a big error made by Copernicus
200
g = (G x m) / r^2
What is the equation for Gravitational field strength
200
Credited with creating first real observatory without telescopes
What is Tycho Brahe
200
mass of object
What is the variable m
200
Measurement of objects resistance to any type of force
What is inertial mass
200
We were the centre of the universe and everything revolves around us
What is early beliefs
300
F = G x ( (m1 x m2) / r ^2 )
What is the force between 2 objects
300
Developed law of Universal Gravitation
What is Sir Isaac Newton
300
Radius of object
What is the variable r
300
The attraction force between 2 objects that is directly proportional to the mass of the objects
What is gravitational force
300
When it is closest to the sun
What is the time a planet moves fastest
400
ac = ( 4 x pie^2 ) / T ^2
What is the equation for centripetal acceleration
400
His apprentice developed 3 laws about planets and space
What is Johannes Kepler
400
Time period
What is the variable T
400
Planetary bodies made of various metals, ice, and elements.
What is a comet
400
Simple balance
What is a potential usage for a simple balance
500
(Ta / Tb) ^ 2 = (ra / rb) ^ 2
What is the equation used to find time period or radius using 2 planets
500
discovered and studied hydrogen; first to measure Newton's gravitational constant; calculated mass and mean density of Earth
What is Henry Cavendish
500
Universal constant
What is the variable G
500
very compact, massive object with an escape velocity so high that nothing, not even light, can escape
What is a black hole
500
The gravitational field on the surface of Planet X is 19.6 N/kg. If an object has a mass of 65 kg, how much will the object weigh on the surface of planet X