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the total momentum of the objects that interact does not change
law of conservation of momentum
if one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction of the first object
Newton's 3rd Law of Motion
the overall force on an object after all the forces are added together
net force
the force required to accelerate one kg of mass at 1 meter per second
Newton
Give me an example of sliding, rolling and fluid friction
Answers may vary
A push or pull
force
when the only force acting on a falling object is gravity, the object is said to be in
free fall
the force of gravity acts between all objects in the universe
the law of universal gravitation
the greatest velocity an object can reach
terminal velocity
an object that is thrown
projectile
friction that occurs when an object moves through a liquid or gas
fluid friction
What is the equation for Force?
Force equals Mass times Acceleration
The force that one surface exerts on another when the two rub against each other
friction
These can cause an object to start moving, stop moving, or change direction
unbalanced forces
any object that travels around another object in space
satellite
the product of an objects mass and velocity
momentum
Equal forces acting on one object in opposite directions
balanced forces
when an object rolls over a surface
rolling friction
Explain how satellites travel around the Earth
they are constantly in free fall, circulating around the earth
objects falling through air experience a type of fluid friction called
air resistance
The tendency of an object to resist change in its motion
inertia
Give me an example of a balanced and unbalanced force
Answers may vary
When solid surfaces slide over each other
An object at rest will stay at rest and an object moving at a constant velocity will continue moving at a constant velocity unless acted upon by an unbalanced force
Newton's 1st Law of motion
any force that causes an object to move in a circle
centripetal force