What is the velocity of a body of mass 100 g having K.E. of 20 J ?
(1) 2 m/s
(2) 20 m/s
(3) 40 m/s
(4) None of these
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Answer:
2=20m/s
Explanation:
Mass of body is 100g.v=20m/sec.Thus final velocity of body is 20 m/sec.
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