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Back to 4.3 Newton’s Second Law of Motion: Concept of a System

4.3 Exercise 17

Avg difficulty 2.5

(a) If the rocket sled shown in the figure starts with only one rocket burning, what is the magnitude of its acceleration? Assume that the mass of the system is 2100 kg, the thrust T is 2.59×1042.59 \times 10^{4} N, and the force of friction opposing the motion is known to be 650 N. (b) Why is the acceleration not one-fourth of what it is with all rockets burning?

OpenStax College Physics 2e, 4.3 Newton’s Second Law of Motion: Concept of a System, exercise 17

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.