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Get Full Access to University Physics - 13 Edition - Chapter 13 - Problem 13dq
Get Full Access to University Physics - 13 Edition - Chapter 13 - Problem 13dq

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# If a projectile is fired straight up from the earth’s ISBN: 9780321675460 31

## Solution for problem 13DQ Chapter 13

University Physics | 13th Edition

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Problem 13DQ

If a projectile is fired straight up from the earth’s surface, what would happen if the total mechanical energy (kinetic plus potential) is (a) less than zero, and (b) greater than zero? In each case, ignore air resistance and the gravitational effects of the sun, the moon, and the other planets.

Step-by-Step Solution:

Solution Step 1 of 3 The total mechanical energy of the body is equal to the sum of kinetic energy and potential energy. E=KE+PE Where kinetic energy is due to the vertue of the motion of the body and it is given by, KE= mv 2 2 Potential energy is the energy possessed due to vertue of the position of the body and is G m M given by, PE= - R Hence total energy, E= 1 mv - G m M ………….1 2 R

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321675460

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