Answer:
2 m/s^2
Step-by-step explanation:
Newton's second law gives us the relationship between force, mass and acceleration:
![F=ma](https://img.qammunity.org/2020/formulas/physics/middle-school/hoqv0uuwk5hamoxytydy5e8slsjemaiqzz.png)
where
F is the force applied
m is the mass
a is the acceleration
In this problem, we have:
m = 70 kg is the mass
F = 140 N is the force
Solving the equation for a, we find the acceleration:
![a=(F)/(m)=(140 N)/(70 kg)=2 m/s^2](https://img.qammunity.org/2020/formulas/physics/middle-school/9ns237r4mjc6tyt8453pf9m8e37qq4p8nm.png)