Calculate Car Acceleration: From 12 m/s to 3 m/s in 3 Seconds

To calculate the acceleration of the car, we can use the formula:

acceleration (a) = (final velocity (vf) - initial velocity (vi)) / time (t)

Given: Initial velocity (vi) = 12 m/s Final velocity (vf) = 3 m/s Time (t) = 3 seconds

Plugging in the values into the formula:

a = (3 m/s - 12 m/s) / 3 s

a = (-9 m/s) / 3 s

a = -3 m/sﾲ

Therefore, the acceleration of the car is -3 m/sﾲ. This indicates that the car is decelerating, or slowing down.