meaning 1
what does speed mean?
how much distance is covered in a certain amount of time
what is static equilibrium?
all forces are balanced
the object is not moving
stored energy
what does terminal velocity mean?
maximum speed an object reaches when falling through a fluid
how many newtons are in a pound and vice versa?
1 pound = 4.448 N
1 newton = 0.225 lb
what does net force mean?
the vector sum of all individual forces acting on an object
what is dynamic equilibrium?
all forces are balanced
the object is moving at a constant speed
what is kinetic energy?
the energy of motion
what does mass mean?
mass is the amount of matter in and object
what is energy?
the ability to do work or cause change
what does support force mean?
the push from a surface that holds something up
what is velocity?
speed with direction
what is a machine?
something that makes work easier
what is inertia?
the tendency of an object to resist changes in its motion
what does mass depend on?
the amount of matter in an object
what does equilibrium mean?
all the forces on an object are balanced
what is work?
work happens when a force moves an object
what is friction?
the force that resists motion between 2 surfaces that are touching
scientific units for force
n newtons
when does acceleration occur?
whenever an objects velocity changes
what does vector mean?
a quantity that has both magnitude and direction
what does power mean?
power is how fast work is done
what does free fall mean?
when an object falls under the influence of gravity only
examples for vector quantiys?
velocity
acceleration
force
what is the relationship between mass and interia?
the relationship is direct
more mass = more interia
less mass = less interia