Let's write down the given values:
u (initial velocity) = 32km/hr ≈ 9m/s
t = 8.2s
v (final velocity) = 65km/hr ≈ 18m/s
And we need to find the average acceleration a,
So I think we can solve this using the suvat equations:
One of them is: v=u+at
We have the required values so we can use that equation
Now just substitution and subject of the formula:
v=u+at
a= v-u/t
a= 9 - (9÷8.2)
a ≈ 8m/s²
Answer: 8m/s²
