Answer:
1.25 m/s²
Step-by-step explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
![a = (f)/(m) \\](https://img.qammunity.org/2021/formulas/mathematics/college/f1nfur3dv1q3xis9z9jehstfpeb6xsi32a.png)
f is the force
m is the mass
From the question we have
![a = (100)/(80) = (5)/(4) \\](https://img.qammunity.org/2021/formulas/physics/high-school/rxmwx61qong85i7zi1jjidgz0d3r4cpayy.png)
We have the final answer as
1.25 m/s²
Hope this helps you