distance = speed x time
final speed - initial speed / time
Average speed formula
total distance / total time
mass x velocity
force x distance
power x time
work / time
Gravitational potential energy formula
weight x height
Mechanical Advantage formula
output force / input force
changing position relative to a reference point.
place or object used to determine of an object is in motion. (tree, building...)
SI unit for distance
SI unit for volume
SI unit for time
SI unit for mass
speed in a given direction
the steepness of a line
the rate at which velocity changes
3 ways to accelerate
increase speed, decrease speed, change direction
a push or a pull
What is force measured in?
motion is observed
the force that two objects exert on each other when they rub against each other
friction that occurs as an object moves through liquid
friction that occurs when one solid slides over another
friction that occurs between two objects that are not moving
friction that occurs when an object rolls on a surface
the attractive force between objects; the force that moves objects downhill.
What two factors affect gravity?
mass and distance
measure of gravitational pull
amount of material in an object
Newtons first law
also known as the law of inertia. Tenancy to keep doing what it's doing. Whatever is in motion stays in motion and whatever is still stays still unless acted upon by an outside force.
Newtons second law
force = mass x acceleration
Newtons third law
for every action, there is an equal opposite reaction. (Ex. balloon)
characteristic of moving objects. The product of an object's mass and velocity.
Law of conservation of momentum
the rule that in the absence of outside forces that total momentum of objects that interact does not change.
Six simple machines
incline plane, screw, wedge, lever, pulley and wheel and axle.
IMA of incline plane
length of plane/width of plane
IMA of screw
length of threads/length of screw
IMA of wedge
IMA of pulley
number of strings supporting the object
IMA of wheel and axle
radius of wheel/radius of axle
What does one NM (newton meter) equal?
What does one JS (joule second) equal?
energy that an object has due to its motion
the energy an object has because of it's position; also the stored internal energy of an object, such as energy stored in chemical bonds.
the ability to do work
add potential and kinetic energy together
Heat travels from:
hotter to colder
a measure of how hot or cold something is with respect to a reference point
the transfer of thermal energy from a warmer object to a cooler object
measure of particles in an object
Three ways that heat transfers
convection, conduction and radiation
can go through anything