Which of the following is true? Select one: O a. At varying mass, an increase in net force will cause an increase in acceleration. O b. At fixed mass, an increase in net force will cause a decrease in acceleration. O c. At varying mass, a decrease in net force will cause an increase in acceleration. O d. At fixed mass, an increase in net force will cause an increase in acceleration.

Which of the following is true? Select one: O a. At varying mass, an increase in net force will cause an increase in acceleration. O b. At fixed mass, an increase in net force will cause a decrease in acceleration. O c. At varying mass, a decrease in net force will cause an increase in acceleration. O d. At fixed mass, an increase in net force will cause an increase in acceleration.

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University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 27P: Astronauts in orbit are apparently weightless. This means that a clever method of measuring the mass...

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Astronauts in orbit are apparently weightless. This means that a clever method of measuring the mass of astronauts is needed to monitor their mass gains or losses, and adjust their diet. One way to do this is to exert a known force on an astronaut and measure the acceleration produced. Suppose a net external force of 50.0 N is exerted, and an astronaut’s acceleration is measured to be 0.893m/s2 . (a) Calculate her mass. (b) By exerting a force on the astronaut, the vehicle in which she orbits experiences an equal and opposite force. Use this knowledge to find an equation for the acceleration of the system (astronaut and spaceship) that would be measured by a nearby observer. (c) Discuss how this would affect the measurement of the astronaut’s acceleration. Propose a method by which recoil of the vehicle is avoided.
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