15.8m/s is the final velocity
Deceleration is calculated by dividing the final velocity minus the initial velocity by the time it takes for this velocity to drop. Here the acceleration formula can be used with a negative sign to determine the deceleration value.
The rate of change of the velocity of an object in the time is known as Acceleration . Velocity is defined as the speed of an object in motion by time.
here we know that the initial velocity is 32m/s.
the deceleration is -1.5m/s2 and the time taken is 10.8s
so from the formula
V=U + at
= 32+-1.5 x10.8
=15.8m/s
So the final velocity is 15.8m/s
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