10.42. Model:Model the two packages as particles. Momentum is conserved in both inelastic and elastic collisions. Kinetic energy is conserved only in a perfectly elastic collision. Visualize:Solve:For a package with mass mthe conservation of energy equation is 221g1 0g0110011()mmKUKUmvmgymvmgy+=+⇒+=+01Using ( )0 m/s and 0 m,mvy==10101( )( )22(9.8 m/s )(3.0 m)7.668 m/s2mvmgyvgy=⇒===(a)For the perfectly inelastic collision the conservation of momentum equation is fi23112(2)()()(2)()xxmmmppm mv=⇒+=+12Using ( )0 m/s, we getmv=231( )( ) /32.56 m/svvThe packages move off together at a speed of 2.6 m/s. (b)For the elastic collision, the mass
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at UGA.