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F = mv
0
1
v
Velocity
m
Force F acting on a body is proportional to its
velocity v of motion;
Force F
Aristotle’s Law of Motion
F = ma
Force
1
m
0 Acceleration a
F
Newton’s Second Law
0
dp
f =
dt
p = mv
p
1
v
where p = momentum
v = velocity
f = force
m
Corrected Newton’s Second Law of Motion
where
2
v
1 − 2
c
p = momentum
f = force
dp
f =
dt
p =
m0 v
Einstein’s Relativistic Law of Motion
Aristotle’s mechanics survived
for thousands of years until they
were displaced by Newton’s.
Newton’s theories of motion
lasted hundreds of years until they
were displaced by Einstein’s.
We’ve lived with general
relativity for less than a century.