Answer:
acceleration = 4.21 [m/s^2]
Step-by-step explanation:
Newton's second law of motion tells us if that the sum of forces on a body is not equal to zero, this body will move with a constant acceleration.
This we can explain in the following equation:
![F=m*a\\where:\\F=force [N]\\m=mass[kg]\\a=acceleration[m/s^2]\\](https://img.qammunity.org/2020/formulas/physics/middle-school/288okbbl966oky8zlsrrsrl8w4heeihijw.png)
Replacing the values we have.
![a=(F)/(a) \\a=(1265)/(300)\\ a=4.21[m/s^(2) ]](https://img.qammunity.org/2020/formulas/physics/middle-school/h1f1mt9nm5dg21ur3fu8ahheo5q8jj34a3.png)