Answer:
![\boxed {\boxed {\sf 6.25 \ kilograms}}](https://img.qammunity.org/2022/formulas/physics/high-school/6ena8chfdytz683srsasuau80dq3kctyi1.png)
Step-by-step explanation:
According to Newton's Second Law of Motion, force is the product of mass and acceleration.
![F= m * a](https://img.qammunity.org/2022/formulas/physics/college/ot4xjl48t6hmypo3s6nr12q8m7bir0u2n9.png)
We know the force is 50 Newtons and the acceleration is 8 meters per second squared. Let's convert the units to make the problem and unit cancellation easier.
1 Newton is equal to 1 kilogram meter per square second (1 kg*m/s²), so the force of 50 N is equal to 50 kg*m/s².
Now we know 2 values:
Substitute the values into the formula.
![50 \ kg *m/s^2= m * 8 \ m/s^2](https://img.qammunity.org/2022/formulas/physics/high-school/satpwmghi5u84laa41bcoy02io45pp9q13.png)
Since we are solving for the mass, we must isolate the variable, m. It is being multiplied by 8 meters per square second and the inverse of multiplication is division. Divide both sides by 8 m/s².
![\frac {50 \ kg *m/s^2}{8 \ m/s^2}= (m * 8 \ m/s^2)/(8 \ m/s^2)](https://img.qammunity.org/2022/formulas/physics/high-school/1pdra2v485u5fgttzfemgpg8qtu77y5fkp.png)
![\frac {50 \ kg *m/s^2}{8 \ m/s^2}= m](https://img.qammunity.org/2022/formulas/physics/high-school/cqxh8rpzgkkwi4pbjedz3tnfkts5ajykxg.png)
The units of meters per square second (m/s²) cancel.
![\frac {50 \ kg }{8 }=m](https://img.qammunity.org/2022/formulas/physics/high-school/y1f62wyn7h8it5iou0ys72xijw17v5a0yl.png)
![6.25 \ kg =m](https://img.qammunity.org/2022/formulas/physics/high-school/9cnd1y90agxyr9lmkkc7n5eb3p9aqvbzbm.png)
The mass is 6.25 kilograms.