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Download 3 Questions on Essential Physics with Solution - Assignment | PHYS 200 and more Assignments Physics in PDF only on Docsity!
Example 1 — ignore air resistance Two kids are having a snowball fight. One snowball of mass 0.500 kg travels with a yelocity of 4.50 m/s to the right. Another snowball of mass 0.375 kg travels to with a velocity of 6.25 m/s to the left. Assuming these snowballs stick together when they meet (a completely inelastic collision), what is the final velocity? Fastial Exe! MY, Fwy V, = Cundtrr) Ge ‘of ——S eae 9.22 - LS msosanky My F ab7F ky Conroy) Vem Up= mY tM, my Me Ve | M+Me - ae | Ok kk ASO): ie 6.85 we i fonser vation of hacer i (9.5409 )( 4.56 0 )5) — (37S b9)/ 6. 25 m/s) Completely inelaghe => — Wha tren trie , a — si S57TR 5 ee mene _ a > Pe Pa ae F Cer 010 Tf : aorta bh ble - te ft Is kinetic energy conserved? Verify your answer mathematically. To be conservecl, FE, > Eg Ep = + me Ye ke, = EE, ee, ke, = + ( b,So0kes + 0318 kg) (9, lo tm kee bm vit a my vs =4 homisyvmas +4 (075k) (br28 mj) = 0.06508 S = 24S KE 27 KE, > ft con servect Let’s say these kids are chucking super balls at each other so that the collisions are elastic. What are the velocities of the super balls after the collision? laste -> © Pz = Pe and OT. Vie = Wy the Storthg wth © ?, ae Ww tM Van = WM, Ge tm, Tap Selve @ For v gettin _ Ps _ . F A Mg = Vor Woe - Vr Subs tuk: this sndo the equbien above ty Vig tm aVap = M, {¥, : 7 _ = ar Vy p = vy) +) +, Y, Var New cCalve Fae Tag MMs tM. Yer = My tM ee Wp tm, ee MV. tPA, von - =. a , ‘ iMag eer ~ MVex TMV = Me tm, Ver Cou ‘collec? Aken ——— = 
