Answer:

Step-by-step explanation:
We can find these answers following the equations of motion.
- To find the acceleration, we use the equation:
Δ

Where Δ
is the difference between the final speed and the initial speed. And
is the time spent
We replace the terms:

We solve the difference:

We divide the terms, so we can have the answer:

2. To find the distance traveled by the truck, we use the equation:

Where
is the distance traveled,
is the initial speed,
is the acceleration and
is the time.
We replace the terms:
![x=(12(m)/(s)*7.5s)+(1)/(2)[0.8(m)/(s^(2) )*(7.5)^(2) ]](https://img.qammunity.org/2020/formulas/physics/college/rire6fe7eyd1epr3n1ye9uj7twkgfdfcnt.png)
We multiply and solve the exponential:

Then, we multiply the terms left:

And add, so we can have the answer:
