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Physics
Physics
Problem
Which expression correctly gives the work
W
W
W
done by a constant force
F
⃗
\vec F
F
acting parallel to the displacement
s
⃗
\vec s
s
? a)
W
=
1
2
F
s
W = \dfrac{1}{2}Fs
W
=
2
1
F
s
b)
W
=
F
s
sin
θ
W = Fs\sin \theta
W
=
F
s
sin
θ
c)
W
=
F
s
cos
180
∘
W = Fs\cos 180^{\circ}
W
=
F
s
cos
18
0
∘
d)
W
=
F
s
W = Fs
W
=
F
s
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