Newton's 2nd Law
Newton's 2nd law
the force that opposes the motion of two surfaces sliding past each other
sliding friction
an attractive force between any two objects
gravity
acceleration toward the center of a curved path
centripetal force
the ability to change it's environment
energy
energy that anything that falls has
gravitational potential energy
equation used for Newton's 2nd law
a = net force (newtons)/mass
a = Fnet / m
the friction that opposes the motion of the wheel
rolling friction
equation for gravitational force
Fg = (gravity constant) x mass1 x mass2 / distance2
F = G (m1m2/d2)
can gravity be a centripetal force
yes
the energy of movement
kinetic energy
the total amount of potential and kinetic energy in a system
mechanical energy
equation for calculating net force
Fnet = ma
opposes motion of objects that move through the air
air resistance
what does the force of gravity depend on
mass and distance
describes action reaction pairs
Newton's 3rd Law
stored energy
what is the equation of mechanical energy
mechanical energy = potential energy + kinetic energy
the force that opposes of motion of two surfaces
friction
force that prevents teo surfaces from sliding past each other
static friction
equation for the force of gravity
Fg (newtons) = mas (kg) / acceleration of gravity (m/s2)
the force needed to change motion that is related to the product of mass and velocity
momentum
energy stored by something that can be stretched or compressed
elastic potential energy
energy can not be created or destroyed - total amount of energy in the universe doesn't change
Law of conservation of energy
When does Newton's 2nd Law fail?
when objects are close to the speed of light
when gravity v air resistance creates a max acceleration and constant speed
terminal velocity
gravitational force exerted on an object
weight
What is the law of conservation of of momentum
an object doesn't change unless its mass, velocity, or both change
can be transferred from one object to another
energy stored in chemical bonds
chemical potential energy
converts a small amount of mass into enormous quantities of energy
nuclear fission