Answers

2016-03-16T22:09:54+05:30
Hi there,
1/2mv^2=200j
if the new mass is 2m
the new kinetic energy=1/2*2m*v^2=200
mv^2=2*200=400j
i hope this helps u..nd pls smash the thanks button ...
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2016-03-16T22:17:15+05:30
kinetic energy = 1/2 *m *v*v
K.E = 200 J
now,
mass is doubled so,
K.E = 1/2*m*v*v*
200 = 1/2*2m*v*v
200/2 = 1/2*m*v*v
100 = 1/2*m*v*v
therefore the new kinetic energy = 100 J

i hope it helps....... 
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