Take the direction of east to be positive and west to be negative.

What is the average acceleration of a jet ski that goes from rest (0 m/s) to 12 m/s east in 3 seconds? Remember: acceleration is the change in velocity divided by time.


A. +4 m/s2 E


B. -4 m/s2 E


C. +0.25 m/s2 E


D. -0.25 m/s2 E