Page_3_from_Physics_1112__Spring_2009__Co_op_9__Impulse__Momentum__Rockets

# Page_3_from_Physics_1112__Spring_2009__Co_op_9__Impulse__Momentum__Rockets

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Physics 1112, Coop for Week 9 Name:__________________ Partners:______________________________ II. A rocket in deep space has a total mass of 6000 kg, including fuel. In normal operation, fuel is gradually burned and exhausted at a speed of 1500 m/s relative to the rocket. When all the fuel has been burned and exhausted, the remaining mass of the rocket is 1000 kg. A. Suppose instead that the rocket could exhaust the entire 5000 kg all at once , after which the speed of the 5000 kg of exhaust with respect to the rocket is 1500 m/s.
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Unformatted text preview: If the rocket was initially at rest, how fast is it moving after exhausting the entire 5000 kg? B. Now suppose that the rocket ejects the fuel in two equal bursts. First it exhausts 2500 kg so that it moves at a speed of 1500 m/s relative to the rocket. Then it ejects the remaining 2500 kg with the same relative speed. If the rocket was initially at rest, how fast is it moving after the two bursts? C. Explain why the answers to (a) and (b) are not the same....
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## This note was uploaded on 12/25/2009 for the course PHYS 1112 taught by Professor Leclair,a during the Spring '07 term at Cornell.

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