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Problem 12-35: Engineering Mechanics- Dynamics (Hibbeler 14th Edition)

Engineering Mechanics Dynamics · R.C. Hibbeler · Chapter 12

Course: Engineering Mechanics Dynamics Book: R.C. Hibbeler Chapter: Chapter 12

Question

Question:
A freight train starts from rest and travels with a constant acceleration of 0.5 feet per second squared. After a time t-prime it maintains a constant speed, so that when t equals 160 seconds it has traveled 2000 feet. Determine the time t-prime.

Two-Phase Motion: Acceleration Then Constant Speed

This lesson solves a two-phase kinematics problem in which an object accelerates uniformly from rest and then travels at constant speed. Students set up distance equations for each phase, combine them into a quadratic, and select the physically valid solution.


In this lesson, you will learn to:
• Break a multi-phase motion problem into acceleration and constant-speed segments and write a distance equation for each
• Combine phase distances into a single quadratic equation and solve using the quadratic formula
• Identify and reject physically invalid roots based on problem constrain

Step-by-step video solution

This DoAssignment.ca lesson explains the problem with a narrated, step-by-step solution for students studying Engineering Mechanics Dynamics from R.C. Hibbeler.

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