topic 3 lesson 3 Flashcards
a ____ _____ must act on an object to cause a change in motion
net force
In other words an object at ____ will remain at rest unless acted upon by a ___________ net force
rest, nonzero
If an object is not _______, it will not start moving until a net force is acts on it
moving
conversely, if an object is moving, it will _____ at a constant ________ until a net force acts to change its speed or _______
remain, velocity, direction
if there is a net force acting on an object it will ___________
exclerate
what is a Inertia
a resistance to a change in motion
what is another name for newtons first law
law of inertia
what is mass
amount of the matter in an object
what is the relationship between mass and inertia
the greater the mass the greater the Inertia
Newton soon discovered that an object’s mass directly affects how much ________ is required to accelerate the object
force
what does it mean for an object to accelerate
increase speed, decrease speedy, and change direction
what happened to the acceleration of an object if you decrease its mass
increase acceleration
what happens to the acceleration of an object if you increase its mass
decrease the acceleration
what is the second law
an object mass directly affects how much force is needed to accelerate to the object
what is the equation for force
F = M x A
the size and direction of a net force equals the ,________ times the acceleration
mass
the net force has the same ______-____ as the acceleration
direction
the force exerted by the surface is _____ in strength and _______ in direction to the force on the surface
equal, opposite
what is the 3rd law
of one object exerts force in one direction then the second force pushes the object pack in place
An action force _________ paired with a reaction force
alwayss
Balanced forces = _______ forces acting on the same object that cancel each other out
equal
