This problem is based on a rocket that has launched from rest and is moving fast

ID: 1392437 • Letter: T

Question

This problem is based on a rocket that has launched from rest and is moving faster and faster upwards originally at rest until its fuel runs out and it coasts to a stop at maximum height. Up is positive. Which of the following force diagrams accurately depicts the forces on the rocket during the boost phase at almost maximum speed (just before teh fuels run out). Assume air resistance is important. (please explain also)

a) b) c) d) e) Fexhaust FexhaustFair Fexhaust air Fair FgFexhaust9 1 air exhaust

Explanation / Answer

F exhaust must be greater

Fair is oppositive to the direction of motion

Fg is always downward

so the answer is A

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This problem is based on a rocket that has launched from rest and is moving fast

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This problem is based on a rocket that has launched from rest and is moving fast

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