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Physics
Physics
Problem
Sphere A has mass
2
m
2m
2
m
and speed
v
v
v
. Sphere B has mass
m
m
m
and speed
2
v
2v
2
v
. Which relation between their kinetic energies
K
A
K_A
K
A
and
K
B
K_B
K
B
is correct? a)
K
A
=
K
B
K_A = K_B
K
A
=
K
B
b)
K
A
=
2
K
B
K_A = 2K_B
K
A
=
2
K
B
c)
K
B
=
2
K
A
K_B = 2K_A
K
B
=
2
K
A
d)
K
B
=
4
K
A
K_B = 4K_A
K
B
=
4
K
A
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