20. Escape velocity is the speed at which an object will break free of a planet or moon’s gravity and enter orbit.A spacecraft leaving the surface of the Earth needs to be going 7 miles per second, or nearly 25,000 miles per hour to enter orbit. Which of the following is true of the strength of a gravity field?A. Gravity field strength is directly proportional to the distance between the objects.B. Gravity field strength is inversely proportional to the distance between the objects.C. Gravity field strength is directly proportional to the square of the distance between the objects.D. Gravity field strength is inversely proportional to the square of the distance between the objects. **Question 20: Escape Velocity and Gravity Field Strength**Escape velocity is the speed at which an object will break free of a planet or moon’s gravity and enter orbit. A spacecraft leaving the surface of the Earth needs to be going 7 miles per second, or nearly 25,000 miles per hour, to enter orbit. Which of the following is true of the strength of a gravity field?- **A.** Gravity field strength is directly proportional to the distance between the objects.- **B.** Gravity field strength is inversely proportional to the distance between the objects.- **C.** Gravity field strength is directly proportional to the square of the distance between the objects.- **D.** Gravity field strength is inversely proportional to the square of the distance between the objects.*Unit 4: Circular Motion**Page 8 of 19*

Answered: Which of the following is true of the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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20. Escape velocity is the speed at which an object will break free of a planet or moon’s gravity and enter orbit.
A spacecraft leaving the surface of the Earth needs to be going 7 miles per second, or nearly 25,000 miles per hour to enter orbit. Which of the following is true of the strength of a gravity field?
A. Gravity field strength is directly proportional to the distance between the objects.
B. Gravity field strength is inversely proportional to the distance between the objects.
C. Gravity field strength is directly proportional to the square of the distance between the objects.
D. Gravity field strength is inversely proportional to the square of the distance between the objects.