A spacecraft with a mass of 12,000 kg is dropping vertically toward a planet at a constant speed of 800 m/s². To slow down the spacecraft, a solid fuel rocket at the bottom of the spacecraft is fired and combustion gases leave the rocket at a constant rate of80- kg/s and at a velocity of 3000 m/s relative to the spacecraft in the direction of motion of the spacecraft for a period of 5 sec. Disregarding the small changes in the mass of the spacecraft determine (a) the deceleration of the spacecraft during the time the solid fuel rocket is being fired, (b) the change in velocity of the spacecraft and (c) the thrust exerted on the spacecraft. Assume B=1.

A spacecraft with a mass of 12,000 kg is dropping vertically toward a planet at a constant speed of 800 m/s². To slow down the spacecraft, a solid fuel rocket at the bottom of the spacecraft is fired and combustion gases leave the rocket at a constant rate of80- kg/s and at a velocity of 3000 m/s relative to the spacecraft in the direction of motion of the spacecraft for a period of 5 sec. Disregarding the small changes in the mass of the spacecraft determine (a) the deceleration of the spacecraft during the time the solid fuel rocket is being fired, (b) the change in velocity of the spacecraft and (c) the thrust exerted on the spacecraft. Assume B=1.

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Description: A spacecraft with a mass of 12,000 kg is dropping vertically toward a planet at a constant speedof 800 m/s². To slow down the spacecraft, a solid fuel rocket at the bottom of the spacecraft isfired and combustion gases leave the rocket at a constant

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum And Collisions

Section: Chapter Questions

Problem 11WUE

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A spacecraft with a mass of 12,000 kg is dropping vertically toward a planet at a constant speed
of 800 m/s². To slow down the spacecraft, a solid fuel rocket at the bottom of the spacecraft is
fired and combustion gases leave the rocket at a constant rate of80-kg/s and at a velocity of
3000 m/s relative to the spacecraft in the direction of motion of the spacecraft for a period of 5
sec. Disregarding the small changes in the mass of the spacecraft determine (a) the deceleration
of the spacecraft during the time the solid fuel rocket is being fired, (b) the change in velocity of
the spacecraft and (c) the thrust exerted on the spacecraft. Assume B=1.

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