Physics Final Flashcards
What is the metric conversion table?
Kilo-Hecto-Deca-BASE-Deci-Centi-Milli
Inertia
The tendency of an object to resist change in motion
Momentum
mass*velocity
Force
- a push or pull
- vector quantity: magnitude and direction
Friction (4 kinds)
- Static
- Sliding
- Rolling
- Fluid
Gravity
A natural force that pulls objects towards each other
Mass
Matter in an object
Speed
Scalar quantity calculated by dividing distance by time (m/s)
Acceleration
- rate of change in velocity
- Change in velocity/time
Base unit for length
meters (m)
Base unit for liquid volume
liters (L)
Base unit for mass
grams (g)
Base unit for temperature
Celsius
Founder of modern physics
Sir Isaac Newton
How is force calculated? What is the unit?
Newtons (N) are the quantity used to measure force
1 Newton is required to give a 1 kg mass an acceleration of 1/m/s/s (1m/s⋀2). 1 Newton= 1 kg*m/s⋀2
What is Newton’s First Law?
An object at rest will remain at rest and an object in motion will stay in motion unless acted upon by and unbalanced or outside force
State Newton’s Second Law
- F=ma
- a=f/m
Net force
Sum of all forces
What is an action-reaction pair?
- Force (push or pull)
- pair of forces acting on two interacting objects. The size of the forces are equivalent.
http://mycampus.nationalhighschool.com/doc/sc/Physical%20Science/ebook/products/0-13-190327-6/sx6452a3.gif
State Newton’s Third Law
For every action, there is an equal but opposite reaction
Energy
A system possesses energy if it has the ability to do work
Energy is a _______ quantity and is ________, so it cannot always be perceived
scalar; abstract
Kinetic energy
Energy associated with motion
Potential energy
Energy associated with position
Examples of kinetic energy
-mechanical energy
-thermal energy
-electrical energy
electromagnetic radiation
Examples of potential energy
- gravitational energy
- strong/weak nuclear energy
- electromagnetic energy
Law of Conservation of Energy
Energy is never lost, just transferred
Unit for energy
joules (J)
balanced force
two equal forces, acting on an object
unbalanced force
movement of object; forces are not equal
velocity
speed and direction
motion maps show
both magnitude and directioin
the (0, 0) point on a position-time graph is called the
origin or reference point
the x-axis for a position-time graph is labeled as
time (seconds)
the y-axis for a position-time graph is labeled as
meters
work
when a force is exerted to move an object some distance in which the force is exerted
in work, the force
must be in the same direction as the movement of the object
work=
force*distance
unit for work
newton*meter
joule (J)
a Joule is
the amount of work done when a force of 1 newton is exerteed to move an object a distance of 1 meter
power
the rate at which work is done
power=
work/time
force*distance/time
unit of power
joule per second (J/s)
known as the watt
two types of energy
kinetic and potential
