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Q. 51

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1061

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Short Answer

The quantity dE/dv, the rate of increase of energy with speed, is the amount of additional energy a moving object needs per increase in speed.

a. kg truck is traveling at . How much additional energy is needed to increase its speed by ?

b. rocket is traveling at. How much additional energy is needed to increase its speed by?

a. energy is needed to increase its speed by .

b. energy is needed to increase its speed by

See the step by step solution

Step by Step Solution

Part (a) step 1: Given Information

We need to find the additional energy needed to increase its speed by in which his truck is traveling at .

Part (a) step 2: Simplify

Consider

Here the speed is not relativistic

(Substitute values in the equation )

Part (b) step 1: Given Information

We need to find the additional energy needed to increase its speed by in witch rocket is traveling at .

Part (b) step 2: Simplify 

Here the speed is definitely():

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