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Q. 3

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 176

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Short Answer

How does a rocket take off What is the upward force on itYour explanation should include an interaction diagram and free-body diagrams of the rocket and of the parcel of gas being exhausted.

Exhausted gases and a high upward force propel the rocket forward.

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Step by Step Solution

Step 1: Free body diagram

Step 2: Explanation

The rocket pushes the exhaust gases down.

The heated gases are pushing up against it.

According to Newton's third law, the two forces constitute a pair.

Because the force of the combustion products on the rocket is heavier of gravitational, the rockets accelerates upward.

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