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At t= 488 s after midnight, a spacecraft of mass 1200 kg is located at position...

At t= 488 s after midnight, a spacecraft of mass 1200 kg is located at position <2 × 105, 8 × 105, -8 × 105> m, and at that time an asteroid whose mass is 4 × 1015 kg is located at position <4 × 105, -3 × 105, -11 × 105 > m. There are no other objects nearby. (a) Calculate the (vector) force acting on the spacecraft. F→net= < , , > N (b) At t= 488 s the spacecraft's momentum was p→i , and at the later time t= 498 s its momentum was p→f . Calculate the (vector) change of momentum p→f-p→i . p→f-p→i= < , , > kg·m/s

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