A runner runs along the helix r(t) = (cost,sin t,t). When he isat position r( π/2), his speed is 3 m/s and he is accelerating at a rate of1/2 m/s2. Find his acceleration vector a at this moment. Note: The runner’s acceleration vector does not coincide with the acceleration vectorof r(t).

A runner runs along the helix r(t) = (cost,sin t,t). When he isat position r( π/2), his speed is 3 m/s and he is accelerating at a rate of1/2 m/s2. Find his acceleration vector a at this moment. Note: The runner’s acceleration vector does not coincide with the acceleration vectorof r(t).

Name: A runner runs along the helix r(t) = (cost,sin t,t). When he isat posi
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Description: A runner runs along the helix r(t) = (cost,sin t,t). When he isat position r( π/2), his speed is 3 m/s and he is accelerating at a rate of1/2 m/s2. Find his acceleration vector a at this moment. Note: The runner’s acceleration vector does not coincid

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 5OQ: Does a car moving around a circular track with constant speed have (a) zero acceleration, (b) an...

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