APFIVE Acceleration From Velocity
A particle moves along a straight line with velocity given by $$v(t) = 4t - 2e^{t/2}$$ for time $$t \ge 0$$. At what time $$t$$ is the acceleration of the particle equal to zero?
A
$$2.386$$
B
$$3.545$$
C
$$2.772$$
D
$$3.159$$
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