Question

a constant force of 120 n is applied to a box, causing it to accelerate at 3.0 m/s^2. what is the mass of the box? 360 kg 40 kg 0.025 kg 123 kg

Explanation:

Step1: Recall Newton's second - law formula

$F = ma$, where $F$ is force, $m$ is mass and $a$ is acceleration. We need to solve for $m$, so we can rewrite the formula as $m=\frac{F}{a}$.

Step2: Substitute given values

Given $F = 120\ N$ and $a=3.0\ m/s^{2}$. Substitute these values into the formula $m=\frac{F}{a}$, we get $m=\frac{120}{3.0}$.

Step3: Calculate the mass

$m = 40\ kg$.

Answer:

40 kg