Question

which formula is used to calculate the mass of an object if the force and acceleration are known?
○ m = fa
○ m = \frac{f}{a}
○ m = \frac{a}{f}
○ m = f - a

Explanation:

Step1: Recall Newton's second - law

Newton's second - law is $F = ma$, where $F$ is force, $m$ is mass and $a$ is acceleration.

Step2: Solve for mass

To find mass $m$, we rearrange the formula $F = ma$ by dividing both sides of the equation by $a$. So, $m=\frac{F}{a}$.

Answer:

B. $m=\frac{F}{a}$