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Physics
Physics
Problem
A cart moving with speed
v
v
v
has kinetic energy
E
E
E
. If its speed becomes
3
v
3v
3
v
, the new kinetic energy will be a)
3
E
3E
3
E
b)
6
E
6E
6
E
c)
9
E
9E
9
E
d)
4.5
E
4.5E
4.5
E
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