A motorboat travels with a constant velocity of 6.0 m/s for 5.0 minutes, after which it turns off the motor, and comes to a stop in 25 seconds. Calculate the acceleration after the motor is turned off.
a) -0.24 m/s²
b) -0.30 m/s²
c) -0.36 m/s²
d) -0.42 m/s²
