Essential Physics - Answer Key for Example 8 | PHYS 200, Assignments of Physics

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Example 8: Chapter 7, #51 A two-stage rocket moves in space at a constant velocity of 4900 m/s, The two stages are then separated by a small explosive charge placed between them. Immediately after the explosion the velocity of the 1200 kg upper stage is 5700 m/s in the same direction as before the explosion. What is the velocity of the 2400 kg lower stage after the explosion? Tritia! Fraei y yy % wad i i = Vey ¥ [

ail batera cl forues - . oe = . Zeer = 2h so SF ed and R> & (ma tm T= MaTagt mp Ue ed My tm) V, = MuVuet m, Vp Te and Vey we both “4% on my frbburt Wat me) Ve = Wave ML Ve ” f MeV = Wy MV - MyMu ¢ vy, - Mat ML) Vp = my, Vu, € fF ao Ye? WPoolks + AHoa ies ) (49G0 m/e) = (1200 b6)(S7e m/s) I cng Paes sacnignne vier maATNe 2 Yoo kg Viet US$ co vals Vie © 11800 mls ty the eigyt