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27 terms

PHYSICS - forces and motion

STUDY
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distance/time
speed =
gravity
the force that exists between two objects with mass
magnetic
the force that exists between magnets
friction
the force that occurs and opposes motion when two objects rub
air resistance
the force that opposes an object moving through the air
reaction
the force that pushes back from solids when there is a push on them
electrostatic
the force that exists between two electrically charged objects
0
the resultant force on a stationary object
grams
what is mass measured in?
newtons
what is weight measured in?
w = mg
what is the relationship between weight, mass and gravitational field strength
10
gravitational field strength of Earth
26
gravitational field strength of Jupiter
8.8
gravitational field strength of Venus
3.7
gravitational field strength of Mars
1.6
gravitational field strength of the Moon
directly proportional
what is the relationship indicated by Hooke's law
0
how many moons does Mercury have
0
how many moons does Venus have
1
how many moons does Earth have
2
how many moons does Mars have
62
how many moons does Jupiter have
33
how many moons does Saturn have
27
how many moons does Uranus have
13
how many moons does Neptune have
1
how many moons does Pluto have
ellipses
what shapes are the orbits of planets and comets