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Physics
Physics
Problem
State the correct expression for instantaneous power when a constant force
F
\mathbf{F}
F
acts on a body moving with velocity
v
\mathbf{v}
v
along the same straight line. a)
P
=
1
2
F
v
P = \dfrac{1}{2}Fv
P
=
2
1
F
v
b)
P
=
F
v
P = Fv
P
=
F
v
c)
P
=
F
v
sin
θ
P = Fv\sin\theta
P
=
F
v
sin
θ
d)
P
=
2
F
v
P = 2Fv
P
=
2
F
v
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