A 6650 kg space probe, moving nose-first toward Jupiter at 209 m/s relative to t

Question

A 6650 kg space probe, moving nose-first toward Jupiter at 209 m/s relative to the Sun, fires its rocket engine, ejecting 130 kg of exhaust at a speed of 279 m/s relative to the space probe. What is the final velocity of the probe?
A 6650 kg space probe, moving nose-first toward Jupiter at 209 m/s relative to the Sun, fires its rocket engine, ejecting 130 kg of exhaust at a speed of 279 m/s relative to the space probe. What is the final velocity of the probe?
A 6650 kg space probe, moving nose-first toward Jupiter at 209 m/s relative to the Sun, fires its rocket engine, ejecting 130 kg of exhaust at a speed of 279 m/s relative to the space probe. What is the final velocity of the probe?

Explanation / Answer

here by using the formula

v = u + v(rel) * ln(Mi / Mf)

v = 105 + 279 * ln(6650 / 6520)

v = 110.5 m/s

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