Answer:
m = mass [kg]
Step-by-step explanation:
This equation is characteristic of the amount of motion and momentum.
![F*t = m*(v_(f)-v_(i))](https://img.qammunity.org/2021/formulas/physics/college/q6yhqvkvftn58nx1r2sw6m81bvfdg2vez3.png)
where:
F = force [N] (units of Newtons)
t = time = [s]
m = mass [kg]
Vf = final velocity [m/s]
Vi = initial velocity [m/s]
Now using the units and placing them in the equation above.
![[N]*[s] = [kg]*(m/s-m/s)\\](https://img.qammunity.org/2021/formulas/physics/college/zp732dbfq2cxcofp2z4z532yj181uhwjw3.png)
![[N]=[kg*m/s^(2) ]](https://img.qammunity.org/2021/formulas/physics/college/we5bfor72kkzsm50c7i076onatjtk1327a.png)
Now replacing:
![[kg*m/s^(2)]*[s]=[kg*m/s]](https://img.qammunity.org/2021/formulas/physics/college/qxjkueffwzo86saff919ghrw3p3gwv1akv.png)
The s² is cancelled with the s, therefore.
![[kg*m/s]=[kg*m/s]](https://img.qammunity.org/2021/formulas/physics/college/x2hsy2wmyc9h45n9duw2wcvek5ok04ycjx.png)