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OpenStudy (anonymous):
if x(t)= 4t^3-6t^2, is the speed of the particle increasing or decreasing at t=3? JUSTIFY.
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OpenStudy (anonymous):
if v(3) and a(3) have opposite signs, then the speed is decreasing (or slowing down). And if v(3) and a(3) have a same sign, the the particle speeds up
OpenStudy (anonymous):
thanks so much
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