Question

When Isabella pushes a box of mass 5.25 kilograms with a force of 15.7 newtons, it accelerates by a rate of 2.50 meters/second2. What is the force due to friction in this scenario?

Answer 1

Resultant force on the box = mass x acceleration

Sigma F = ma

Fr: friction force

15.7 - Fr = 5.25 x 2.5

15.7 - Fr = 13.125

Fr = 15.7 - 13.125 = 2.575 N

Answer 2

If the frictional force is F, the unit of acceleration is m/s²

according to Newton first law, $Fnet=ma$

But you are unaware of $Fnet.$

⇒$Fnet=Fpush+Ffriction$

You can see that you are currently aware of everything except for$Fnet$and $Ffriction.$

• $Fpush = 15.7N\\m= 5.25kg$
• $a=2.5$ m/s²

The only unknowable variable is  $Ffriction$.

Determination of frictional force

⇒$Fnet=Fpush+Ffriction$

⇒$Fnet=ma$

replacing $Fnet$ with $Fpush+Ffriction$

⇒$Fpush+Ffriction =ma$

$15.7- Ffriction$ $= 5.25$ × $2.50$

$15.7-Ffriction= 13.125$

$Ffriction = 15.7-13.125$

$Ffriction = 2.575N$

The force due to friction is $2.575N$

learn more about the force due to friction https://brainly.com/question/25534663

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