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Physics
Physics
Problem
Which proportionality correctly describes how the kinetic energy
K
E
KE
K
E
of a body varies with its speed
v
v
v
when the mass is kept constant? a)
K
E
∝
v
3
KE \propto v^{3}
K
E
∝
v
3
b)
K
E
∝
v
KE \propto v
K
E
∝
v
c)
K
E
∝
v
2
KE \propto v^{2}
K
E
∝
v
2
d)
K
E
∝
v
KE \propto \sqrt{v}
K
E
∝
v
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