100% - 81% = 19%
19% did not pass.
0.333.... as a fraction is 1/3.
acceleration of ball is 
Step-by-step explanation:
Initial Velocity = 12m/sec
time = 36 s
Final Velocity 0 m/sec (ball comes to stop)
Acceleration= ?
The formula used to find acceleration is:

Putting values and finding acceleration:




So, acceleration of ball is 
Keywords: Acceleration
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