The accompanying figure shows the velocity v(t) of a particl

The accompanying figure shows the velocity v(t) of a particle moving on a horizontal coordinate line,forin the closed interval [0,10] .
Answer the questions below using points,lists of points,intervals,or unions of intervals,whichever is appropriate.
Note:Derivatives at the endpointshould be right-hand derivatives,while derivatives at the endpoint t=0 should be left-hand derivatives t=10.


When does the particle speed up?
ANSWER:
When does the particle slow down?
ANSWER:
When is the particle's acceleration positive?
ANSWER: