Inertia
what is inertia
what is newtons 2nd law
acceleration of an object is directly proportional to the net force acting on it
Can I add action and reaction forces to get zero net force?
No! Action-reaction pairs act on different object so you don't add them to find the net force on a single object.
what is friction
a force that resists motion when 2 surfaces rub against each other
what are balanced forces
forces acting on an object that are equal in strength and opposite in direction canceling eachother out
is inertia a force
No inertia is a property not a force
how are force and acceleration related
force and acceleration have a direct relationship because the more force results in more acceleration
How does a rocket work in space?
The rocket pushes hot gas downward (action), and the gas pushes the rocket upward (reaction), propelling it forward, even in the vacuum of space where there's nothing to "push against" in the traditional sense
what affects friction
the surface type/roughness and how hard they are pressed togther
does balance effect motion
it causes no change in motion(an object at rest will stay at rest)
how does mass relate to inertia
the more mass something has the more inertia it has
what is net force
total overall force action upon an object
What are action-reaction forces acting on a book on a table?
The book's weight pulling down on the earth and the earth pulling up on the book.
types of friction
static, sliding, rolling, and fluid
what are unbalanced forces
forces that are not equal and opposite, resulting in a non net force
what is the law of inertia
and object at rest stays at rest, and an object in motion stays in motion
what is acceleration
any change in a objects velocity
If I push on a wall, why does't it move?
The wall pushes back with an equal fore, but the wall is attached to the ground, so the net force on the wall system is huge, preventing movement.
how to reduce friction
use lubricants to smooth out surfaces and reduce friction
they cause the object to accelerate
why is inertia more obvious in space?
On earth friction and air resistance mask inertia
how do you calculate force
force= mass x acceleration x m/s
What exactly is the "action-reaction pairs"?
it's tow forces that results from an interaction between tow objects.
how does friction work
microscopic bumps on a surface rubbing against the other surfaces bumps
how to calculate net force
N+N=N