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Rectilinear Motion

At zero acceleration a particle moves along a straight line. What is the velocity of a particle at the position of

x = t4 -20t2 + 42 ?


a. + 48.68 m/sec

b. - 48.68 m/sec

c. + 42 m/sec

d. - 42 m/sec








ANSWER: - 48.68 m/sec

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