Background Information
what is gravity?
the invisible force of attraction between all masses in the universe (pull)
1st law of motion
an object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force
mass
the amount of matter in an object
velocity
the measure of the speed and the direction of an object
drag
the force that slows an object down
what is law?
statement about how things work in nature that seems to be true
what are unbalanced forces?
an object to start moving, stop moving, or change direction
momentum
(n) the force with which something moves
speed
the measure of an objects distance during a unit of time
lift
upward force on an object
who is Issac Newton?
Defined the laws of motion and gravity. Tried to explain the motion of the universe.
friction
the resistance caused when one object is moved in contact with another
scales
the ratio between the size of something and a representation of it
force
push or pull of any kind
energy
the ability to do work
what are laws of motion?
Three laws, came up by Sir Isaac Newton, that describe how objects move in relation to the forces acting on them.
2nd law of motion
an object with an unbalanced force acting on it will accelerate in the direction of that force...f=m(a) ; force = mass times acceleration
weight
A measure of the force of gravity on an object
acceleration
any change in the speed or direction of an object's motion
potential energy
stored energy, energy ready to be released
inertia
likely to maintain a state of rest unless acted upon by an external force
3rd law of motion
for every action there is an equal and opposite reaction
motion
a change of position of an object
thrust
the force that moves an object forward
kinetic energy
the energy of motion