A space 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?

Question

justus · Answer

a = change in velocity / change in time 
a = 0 - (-150) / 30 - 0a = _____ m/s2

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