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Physics
Physics
Problem
For a particle of constant mass
m
m
m
moving under a net force
F
\mathbf F
F
, prove that
d
(
1
2
m
v
2
)
=
F
⋅
d
r
.
d\!\left(\tfrac12 m v^2\right)=\mathbf F\cdot d\mathbf r.
d
(
2
1
m
v
2
)
=
F
⋅
d
r
.
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