My course

Hi there! You are correct. If we used more digits in the previous step, we would be approaching 1407.433509.

This is not a cause of concern, since sig figs require us to use the first digit only - 1 × 10^3.

I disagree with the answer. The second graph has a discontinuous velocity at 2 points, so it has an infinite acceleration at those 2 points. The video says that acceleration on that curve is zero, ignoring the discontinuous velocity.

Hi there! Thank you for the feedback. We have some grid lines, but they fairly blurred.