A particle has velocity v=2t-6 m,s-1 for 0

Question

A particle has velocity v=2t-6 m,s-1 for 0 <= t 5 seconds. State when its speed decreases and when it increases, and explain why positive acceleration does not imply increasing speed.

Accepted Answer

Speed decreases on $(0,3)$, then increases on $(3,5)$. Before $3$ s, positive acceleration makes the negative velocity closer to zero.

Positive acceleration while slowing down

Positive acceleration while slowing down

Solution:

Solution locked