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# Professional ApplicationIt is possible for the velocity of

## Problem 22CQ Chapter 8

College Physics by Urone | 1st Edition

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College Physics by Urone | 1st Edition

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Problem 22CQ

Professional Application

It is possible for the velocity of a rocket to be greater than the exhaust velocity of the gases it ejects. When that is the case, the gas velocity and gas momentum are in the same direction as that of the rocket. How is the rocket still able to obtain thrust by ejecting the gases?

Step-by-Step Solution:

Problem 22CQ

Solution 22 CQ

Step 1 of 3:

In this question, we need to explain if velocity of rocket is greater than exhaust velocity of gases, how can rocket still able to obtain thrust by ejecting the gases if the gas velocity and gas momentum are in same direction of that of rocket

Step 2  of 3:

Let us consider relation between escape velocity and velocity of the rocket

It is given by

So when velocity of rocket is greater than exhaust velocity, we have

Thus the mass of the gas is not negligible compared to mass of rocket

Step 3 of 3

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Professional ApplicationIt is possible for the velocity of

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