The x-coordinate of a particle in curvilinear motion is given by x = 3.9t° - 1.6t where x is in feet and tis in seconds. The y-component of acceleration in feet per second squared is given by ay = 5.2t. If the particle has y- components y = 0 and vy = 3.7 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 2.8 sec. Sketch the path for the first 2.8 seconds of motion, and show the velocity and acceleration vectors for %3D t= 2.8 sec. Answers: V = i ft/sec i ft/sec?

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The x-coordinate of a particle in curvilinear motion is given by x = 3.9t3 - 1.6t where x is in feet and tis in
seconds. The y-component of acceleration in feet per second squared is given by a, = 5.2t. If the particle has y-
components y = 0 and vy = 3.7 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t
= 2.8 sec. Sketch the path for the first 2.8 seconds of motion, and show the velocity and acceleration vectors for
t = 2.8 sec.
%3D
Answers:
V =
i
ft/sec
a =
i
ft/sec?
Transcribed Image Text:The x-coordinate of a particle in curvilinear motion is given by x = 3.9t3 - 1.6t where x is in feet and tis in seconds. The y-component of acceleration in feet per second squared is given by a, = 5.2t. If the particle has y- components y = 0 and vy = 3.7 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 2.8 sec. Sketch the path for the first 2.8 seconds of motion, and show the velocity and acceleration vectors for t = 2.8 sec. %3D Answers: V = i ft/sec a = i ft/sec?
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