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Physics
Physics
Problem
Which of the following equations correctly relates velocity
v
v
v
and displacement
s
s
s
for a body in free fall with initial velocity
u
u
u
when downward is taken as positive? a)
v
2
=
u
2
+
g
s
v^{2}=u^{2}+gs
v
2
=
u
2
+
g
s
b)
v
2
=
2
g
s
v^{2}=2gs
v
2
=
2
g
s
c)
v
2
=
u
2
+
2
g
s
v^{2}=u^{2}+2gs
v
2
=
u
2
+
2
g
s
d)
v
2
=
u
2
−
2
g
s
v^{2}=u^{2}-2gs
v
2
=
u
2
−
2
g
s
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