Calculus 1: Derivative Applications - Motion (5 of 7) Position, Velocity, Acceleration: Ex. 5

In this video I will find a=? when v=12m/s, v=? when a=6m/s^2, is a=constant?, and t=? when v=12m/s given x(t)=2t^3-15t^2+48t-10.

Next video in this series can be seen at:

[crvenakamilica]

I believe that you haven't factored the polynomial for the velocity correctly, I think it should be 0=(t-3)(t-2) instead of 0=(t-6)(t+1).
Otherwise great video, thank you very much.

[ibrahimr]

How come multiplying -6 x 1 gives positive 6?

[note]

I think teacher Michle merely wants to see how many people watch his video by making a little mistake 😁
a student from China have got it 😁
Thankyou.Teacher😘

[gadxxxx]

.I agree with Hjlmath Klok. Maybe redo the video.