Ch. 12 Flashcards
Newtons 1st Law
State of motion of an object does not change as long as the net force acting on the object is zero
Newtons 2nd Law
Acceleration of an object is equal to the net force action on it divided by the object mass
Newtons 3rd law
Whenever an object exerts a force on a second object, the second object exerts an equal and opposite force on the first object
Force
Push or pull acting on an object
Newton
The force that causes 1 kilo mass to accelerate
Net force
Overall force acting on an object
Friction
Force that opposes the motion of objects
Static friction
Acts on objects that aren’t moving
Sliding friction
Acts as the objects that slide over a surface
Rolling friction
Acts on rolling objects
Fluid friction
Acts on objects that go through fluid
Air resistance
Acts on objects moving through air
Gravity
Force that acts between 2 masses
Terminal velocity
Constant velocity of a falling onject
Projectile motion
Motion of a falling object after its forward velocity
Inertia
Tendency of an object to resist a change in its mtion
Mass
Measure of the inertia of an object
Weight
Force of gravity acting on an object
Momentum
Product of an objects mass and velocity
Law of conservation of momentum
No net force acts on an object acts on a system the total momentum is conserved
Electromagnetic force
Force associated with charged particles
Strong nuclear force
Powerful force of attraction acts only on neutrons and protons
Weak nuclear force
Attractive force that acts only on short ranges
Gravitational force
Attractive force that acts between two masses
