Bullet 2 has twice the mass of bullet 1. Both are fired so that they have the same speed. If the kinetic energy of bullet 1 is K, is the kinetic energy of bullet 2
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✧║Question ║Bullet 2 has twice the mass of bullet 1. Both are fired so that they have the same speed. If the kinetic energy of bullet 1 is K, is the kinetic energy of bullet 2
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✠Let m be the mass of bullet 1.According to the given condition, the mass of bullet 2 is 2m.Kinetic energy of bullet 1 is KE 1 = 21 mv 2 =KKE of bullet 2 is KE 2 = 21 (2m)v 2 =2( 21 mv 2 )=2K
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