Physics - Chapter 2 Flashcards
Rate of change of position with time
Velocity
Rate of change of velocity with time
Acceleration
Force on the body caused by the pull of gravity on it
Weight
Product of the mass of an object and its velocity
Momentum
Product of force and distance
Work
Quotient of work by time
Power
v=d/t
Velocity
v(av) = vi + vf / 2
Average velocity
a=vf - vi / t
Acceleration
F = ma
Force
Wt = mg
Weight
p = mv
Momentum
w = Fd
Work
P = w/t
P = Fd/t
Power
KE = 1/2mv^2
Kinetic energy
PE = mgh
Potential energy
Unit of velocity
m/s
Unit of acceleration
m/s^2
Unit of force
Newton
Unit of weight
Newton
Unit of work
Joule
Unit of power
Watt (W)
Unit of potential energy
Joule
Inertia - a body will remain at rest or will continue to move with constant velocity unless acted on by an external force
Newton’s first law
Force - the force that acts on an object is equal to the mass of the object multiplied by the acceleration produced
Newton’s second law
Action/reaction - for every action there is an equal and opposite reaction
Newton’s third law
Based on the vibration of atoms of cesium
Second
The velocity of light is constant and symbolized by:
c = 3 x 10^8 m/s
The kinetic energy of the random motion of molecules
Heat
1 kilogram = mass of 1000cm^3 of water at 4 degrees
Mass
1 meter = distance travelled by light in 1/299 792 468s
Length
