Answer
$v=63.2$ ft/s
Work Step by Step
Since the automobile is traveling at a constant speed, $a_t=0$.
Thus, $a_n=a=5 ft/s^2$.
$a_n=\frac{v^2}{\rho}$, we have
$v=\sqrt{\rho a_n}=\sqrt{800(5)}=63.2$ ft/s
Engineering Mechanics: Statics & Dynamics (14th Edition)
by Hibbeler, Russell C.
Published by
Pearson
ISBN 10:
0133915425
ISBN 13:
978-0-13391-542-6
Chapter 12 - Kinematics of a Particle - Section 12.7 - Curvilinear Motion: Normal and Tangential Components - Problems - Page 65: 110
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