Question

Problem 10.17 In outer space a rock with mass 6 kg, and velocity <3900, -2800, 2400> m/s, struck a rock with mass 15 kg and velocity <300, -250, 260> m/s. After the collision, the 6 kg rock's velocity is <3600, -2300, 2700> m/s. What is the final velocity of the 15 kg rock? m/s What is the change in the internal energy of the rocks? AEinternal Which of the following statements about Q (transfer of energy into the system because of a temperature difference between system and surroundings) are correct? (Ignore heat transfer by radiation.) Check all that apply: AK of the rocks. Q Q AEinternal of the rocks. Q0 because there are no significant objects in the surroundings. Q0 because the duration of the collision was very short

Answer 1

using Conservation of monenten 6 (3900 ? - 2800) +2400%) + 15 (3001 - 2503 +2608) - 6636001?_2300 +3 700K) + 15 TE - 6300 i – 6750 h +21002 = 15 Vf & up (4.20 ,-450, 1407419 DE 1 x 154 (420) + (450)" 4640)² - 12 tisd 420) +(450) 1640)*-(300)-1250)* +626923 ti x64 3600) +(2300)+(2700) (3900)*6800)*240)} & 15 & 178400} + 34-3270 000} 7 1338000 - 98 10000 » E8472000 Joules Q- NK Q - s Einternal

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