# Calculus - Physics Word Problem?

A particle travels along a coordinate line with the position function from t=0s to t=8s.

x(t)= (1/3)t^3 + t^2 -15t +2

When is the velocity zero?

When does the particle turn?

When is the particle turning left?

x(t)= (1/3)t^3 + t^2 -15t +2

When is the velocity zero?

When does the particle turn?

When is the particle turning left?

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