Newton's first law
An object in motion______________.
Stays in motion
What is the formula for calculating force?
F=ma
Force= mass x acceleration
Every action has a __________.
reaction
The force on an object due to gravity
weight
Newton discovered which force?
Gravity
A moving object will remain in motion unless...
it is acted upon by an outside force to stop it
State Newton's second law.
Net force is equal to mass times acceleration.
Forces always occur in ________.
The measure of the amount of matter in an object.
mass
Objects tend to maintain their state of ______.
motion
State Newton's first law.
An object at rest remains at rest and an object in motion remains in motion unless acted upon by an outside force.
Force is measured in what unit?
Newtons
The product of the mass of an object times its velocity is the object's __________.
momentum
When the only force acting of an object is gravity
free-fall
Objects in projectile motion accelerate in which direction?
downward
Objects will change their state of motion when ______ is applied.
force
Unbalanced forces causes objects to _______.
Move/Accelerate
State Newton's third law.
For every action there is an equal and opposite reaction
The curved path followed by an object that is throw, launched, or projected.
Projectile motion
Newton's first law is also called the law of what?
inertia
the tendency of an object at rest to remain at rest, or the tendency of a moving object to keep moving
inertia
When the net force on an object is not zero, what happens to the object?
It accelerates in the direction of the force.
"The total momentum of two or more objects after a collision is the same as it was before the collision."
What is this principle called?
The Law of Conservation of Momentum
Gravitational force increases as an object's ______ increases.
mass
Newton's third law is also called the law of
action-reaction