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Abhishek (India)
Answers (3)
5 J = 1/2 *m*1, solving this, mass of the body is 10kg. Now, KE = 1/2 mv^2 implies 1/2 * 10 * 3^2 = 45 J
Hi dear, KE = 1/2 mv^2. Hope you'll be able to do it now.
Follow the rule of conservation of energy.
