A two-stage rocket (M = 7.50 × 103 kg) initially travels at 4.50 km·s−1 relative to Earth. Explosive charges then separate the capsule (mC = 1.50 × 103 kg) from the booster (mB = 6.00 × 103 kg). After separating, the booster travels at 2.70 km·s−1 along the original direction of motion. a)  What was the speed of the capsule just after the stages separated? b)  How much energy was released by the explosive charges?

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Chapter5: Relativity
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A two-stage rocket (M = 7.50 × 103 kg) initially travels at 4.50 km·s−1 relative to Earth. Explosive charges then separate the capsule (mC = 1.50 × 103 kg) from the booster (mB = 6.00 × 103 kg). After separating, the booster travels at 2.70 km·s−1 along the original direction of motion.

a)  What was the speed of the capsule just after the stages separated?

b)  How much energy was released by the explosive charges?

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