Aspace vehicle deploys its re–entry parachute when it's traveling at a vertical velocity of –150 meters/second (negative because the parachute is going down.) it comes to rest at 0 meters/second after 30 seconds. what's the average acceleration of the shuttle during this time span?

Explanation:

Aceleration is a change on the velocity of the object in a given time.

For this case: the initial velocity is

and the final velocity is :

so, the change in velocity is:

and the change in time , according to the problem:

So, the aceleration is:

dang that balls went far

i don't understand. explain it clearly