gravity
gravity affects ___________ but not mass
weight
speed is equal to distance divided by what
time
what is the SI unit for force named for the guy who came up with most of the laws associated with forces and motion
Newton
this name for the unit of work sounds like the name of a precious gem
joule
energy of position
potential energy
Gravity on Earth accelerates objects at _____ m/s2
9.8
velocity is the same as speed but velocity includes what
direction
on force diagrams which direction does gravity always pull
down
thats correct, actually its watt spelled with an extra t and no h
energy of motion
kinetic energy
there is a ____________ relationship between the mass of 2 objects and the gravitational force
direct
on a position vs time graph a horizontal line means what
the object is stationary, not moving
what does a longer arrow indicate on a force diagram drawing
more force
for work to occur what must happen
a force has to move over a distance, movement
what are 3 ways energy can be transferred
convection, conduction, radiation
what 2 factors affect the gravitational force between 2 objects
mass and distance
on a position time graph a steeper slope indicates what
greater speed
which law says a stationary or moving object will remain that way until acted on by a net force
1st law
how could you increase power, if the work you do stays the same
do the work in less time , faster
name the 3 temperature scales
Kelvin, Fahrenheit, Celsius
if the gravity between 2 objects is 100N and the distance between them is doubled what will the new gravitational force be
25N
on a velocity time graph what does a horizontal line indicate
constant speed
Newton's 1st law is also called the law of ________ - that means an object resists a change in motion
inertia
how are work and power related
power is how fast work is done
what is the amount of heat required to raise 1 gram of a substance by 1 degree celsius
specific heat