Hello:) I need help with 2aii , thank you in advance!

Please see the attached picture.

(Draw a horizontal line anywhere above v=0.)

Explanation:

Zero acceleration means that the object is moving at a constant velocity (constant speed). It doesn't mean that it is at rest as it is still moving but at a constant speed of 5m/s, for example. At rest would mean that the speed is 0m/s, and the object is stationary.

Acceleration can be found by the gradient of the graph. To get an acceleration of zero, the line has to be a horizontal graph.

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

i would like to make dinner for my mom, dad, and sister