Problem solving on Calculus

Question

1. A particle starting from rest at time t=0moves with position function s(t)=t⁴- t²/2

1. At what time does the particle change direction?

2. What is the particle’s acceleration at the time found in part a?

Answer 1

Hi Kodahk, this is my video answer. Its not too long a problem , I just include some other details. Please don't mind the 2 star rating, that was a mistake that happened before with someone. But I would love to help you further with calculus. Plase just let me know?