# Question #d734d

Aug 16, 2016

$43.75 N$

#### Explanation:

Using Newton's equation for force:

$F = m \cdot a$
$F = \left(12.5 k g\right) \cdot \left(3.5 \frac{m}{s} ^ 2\right)$
$F = 43.75 k g \cdot \frac{m}{s} ^ 2$ or $43.75 N$

Aug 16, 2016

I tried this:

#### Explanation:

Here you can use Newton's Second Law that tells us that the resultant of all the forces acting on a body of mass $m$ will produce an acceleration $a$ or:
$\Sigma \vec{F} = m \vec{a}$

in your case you can assume a movement in one dimension and lose the vector notation to write (havinhg one force only):
$F = m a$

you only need to substitute your given values for mass and acceleration and multiply to get your force in Newtons.