Question: I'm looking for the answer to D article moves according to a law of motion s=f(t),t0, where t is measured in seconds and s in

I'm looking for the answer to D

article moves according to a law of motion s=f(t),t0, where t is measured in seconds and s in feet. f(t)=t312t2+36t (a) Find the velocity at time t. v(t)= (b) What is the velocity after 4s ? v(4)= (c) When is the particle at rest? (Enter your answer as a comma-separated list.) t= (d) When is the particle moving in the positive direction? (Enter your answer in interval notation.) t= (e) Find the total distance traveled during the first 8s. it

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