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Physics
Physics
Problem
Two objects A and B move such that their
K
E
KE
K
E
versus
v
2
v^{2}
v
2
graphs are straight lines through the origin with slopes
5
J
s
2
/
m
2
5\,\text{J\,s}^{2}\!\big/\!\text{m}^{2}
5
J
s
2
/
m
2
and
8
J
s
2
/
m
2
8\,\text{J\,s}^{2}\!\big/\!\text{m}^{2}
8
J
s
2
/
m
2
respectively. When each object is moving at
4
m/s
4\,\text{m/s}
4
m/s
, what is the ratio
K
E
A
:
K
E
B
KE_{A}:KE_{B}
K
E
A
:
K
E
B
? a)
25
:
64
25:64
25
:
64
b)
8
:
5
8:5
8
:
5
c)
5
:
8
5:8
5
:
8
d)
1
:
1
1:1
1
:
1
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