Physics help? In outer space a rock with mass 4 kg, and velocity < 4000, -3200, 2800

Physics help?

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In outer space a rock with mass 4 kg, and velocity < 4000, -3200, 2800 > m/s, struck a rock with mass 17 kg and velocity < 240, -310, 180 > m/s. After the collision, the 4 kg rock's velocity is < 3500, -2500, 3100 > m/s. What is the final velocity of the 17 kg rock? m/s f = (357.65,-474.71,109.41) What is the change in the internal energy of the rocks? AEinternal = 1.402e7 |x J 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: Q0 because there are no significant objects in the surroundings. Q=AK of the rocks. Q=AEinternal of the rocks. 20 because the duration of the collision was very short. In outer space a rock with mass 4 kg, and velocity < 4000, -3200, 2800 > m/s, struck a rock with mass 17 kg and velocity < 240, -310, 180 > m/s. After the collision, the 4 kg rock's velocity is < 3500, -2500, 3100 > m/s. What is the final velocity of the 17 kg rock? m/s f = (357.65,-474.71,109.41) What is the change in the internal energy of the rocks? AEinternal = 1.402e7 |x J 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: Q0 because there are no significant objects in the surroundings. Q=AK of the rocks. Q=AEinternal of the rocks. 20 because the duration of the collision was very short.