12-127 | Curvilinear Motion | Engineering Dynamics Hibbeler 14th Edition | Engineers Academy

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Curvilinear Motion - Rectangular Components
12-127 | Curvilinear Motion | Engineering Dynamics Hibbeler 14th Edition | Engineers Academy
12–127. At a given instant the train engine at E has a speed of 20 m/s and an acceleration of 14 m/s2 acting in the direction shown. Determine the rate of increase in the train’s speed and the radius of curvature r of the path.

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[ivonnearriaga]

I happen to get the same for the rate of increase as the video but it’s still incorrect. Anyone else get something different?

[wesrayburn]

He didn't solve for rate of change for the speed of the train?