55. (a) Let vbe the final velocity of the ball-gun system. Since the total momentum of the system is conserved mvi= (m + M)v. Therefore, (60 g)(22 m/s)4.4 m/s60 g + 240 gimvvmM===+.(b) The initial kinetic energy is Kmvii=122and the final kinetic energy is MvmvmMfi=+=+1221222bgbg. The problem indicates ΔEth=0, so the difference Ki– K
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.