A Car Is Traveling North At $17.7 \mathrm {~m} / \mathrm { s }$

A car is traveling north at $17.7 \mathrm {~m} / \mathrm { s }$ After 12 s its velocity is $14.1 \mathrm {~m} / \mathrm { s }$ in the same direction. Find the magnitude and direction of the car's average acceleration.

A) 0.30 m/s², south
B) 2.7 m/s², south
C) 0.30 m/s², north
D) 2.7 m/s², north

Correct Answer:

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