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Physics B (Chapter 9- Momentum (mv = p (v = velocity (m/s), p = momentum…
Physics B
Chapter 9- Momentum
mv = p
v = velocity (m/s)
p = momentum (kg x m/s)
m = mass (kg)
Impulse
Momentum theory
FΔt = impulse
F = force (N)
t = time (s)
FΔt = mΔv
m = mass (kg)
v = velocity (m/s)
t = time (s)
F = force (N)
Law of Conservation of Momentum
Momentum cannot be created or destroyed
momentum before = momentum after
Chapter 10- Work
W = F x d
F = force (N)
d = distance (m)
W = work (J)
Power
Rate at which work is done
P = W / t
W = work (J)
t = time (s)
P = power (W)
Simple machines
compound machine
two or more simple machines working together
wedge
inclined plane
screw
lever
wheel and axle
pulley
Chapter 14- Waves
Types of Waves
Transverse wave
Longitudinal wave/compressional wave
Terms
Period = time / wavelength
frequency = waves / time
Movement of Waves
reflection
returning of a wave
refraction
change in direction of a wave between two media
diffraction
bending of light around a barrier
Lenses and Mirrors
Convex lens
refract and convergent
Concave mirror
reflect and convergent
Concave lens
refract and divergent
Convex mirror
reflect and divergent
Chapter 11- Energy
Ability to do work
Kinetic Energy
KE = 1/2 mv^2
m = mass (kg)
v = velocity (m/s)
KE = kinetic energy (J)
Gravitational Potential Energy
GPE = mgh
m = mass (kg)
g = gravity (m/s^2)
GPE = gravitational potential energy (J)
h = height (m)