Hey there, the answer is .............................. About 0.7 m/sec^2
Acceleration is the change in speed / time
Change in speed is 60 m/sec
Time is 1 minute 25 second. Convert that to seconds.
Divide the change in speed by the time in seconds.
About 0.7 m/sec^2
So the acceleration is - 60 / 85 = - 0.71 m/s^2
HOPE I HELPED!!!!!!!!!!