The st graph for a train has been experimentally determined. From the data, construct the vt and at graphs for the motion; 0 t 40 s. For 0 t 30 s, the curve is s = (0.4t 2) m, and then it becomes straight for t 30 s.
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PY 205 with Daniel Dougherty Week 1 Chapter 1 1/12/2016 Theory – broader, more detailed and can give quantitatively testable predictions, often with great precision Law – certain, concise but general statements about how nature behaves Principle- less general statements o Scientific laws are descriptive because they describe how...
Textbook: Engineering Mechanics: Statics & Dynamics
Author: Russell C. Hibbeler
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