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A 10 kg mass moves 3,0 m against a retar...

A 10 kg mass moves 3,0 m against a retarding force shown in the figure. If the force is zero at the beginning, how much kinetic energy is changed ?

A

6 J

B

`-6 J`

C

12 J

D

`-12J`

Text Solution

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The correct Answer is:
B
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