Answer :
The acceleration of the car is 1.61m/s and this is constant acceleration.
According to the equation of motion for constantly accelerating body,
V = U+at
Where,
V the final velocity which is 22m/s in our case.
U is the initial velocity which is 12m/s In our case.
T is the time taken which is 6.2 seconds in our case.
a is the acceleration of the body.
Now, putting all the values,
22 = 12 +a6.2
a = 1.61 m/s².
So, the constant acceleration of the body is 1.61m/s².
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