Motion + Newtons laws Flashcards
Motion
an objects change in position over time when compared with a reference point
Speed
the rate at which an object moves
Velocity
the speed of an object in a particular direction.
Velocity formula
d/t plus direction
speed formula
d/t
speed si unit
m/s
velocity si unit
m/s^2
acceleration
the rate at which velocity changes
calculate acceleration
A= (Vf-Vi)/t
Force
a push or a pull
force si unit
Newtons
Inertia
Newtons first law
what is centrifugal
spin away from center
what is centripetal
Spin to center
friction
a force that opposes motion
Gravity
a force of attraction between objects which is due to their masses
weight
a measure of the gravitational force exerted on an object
weight si unit
Newtons
Mass
the amount of matter in an object
mass si unit
Grams
Newtons 1st
an object at rest will stay at rest and an object in motion will stay in motion at a constant speed in a straight line unless the object is acted upon by an unbalanced force
Newtons 2nd
the acceleration of an object depends on the mass of the object and the amount of force applied
2nd law formula
F=ma
Newtons 3rd
whenever one object exerts a force on a second object the second object exerts an equal and opposite force on the first
Momentum
a property of a moving object that depends on the mass and velocity
momentum formula
P=mv
Law of conservation of momentum
anytime two or more objects interact, they may exchange momentum, but the total amount of momentum stays the same
