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MissPhiladelphia
Hi, thank you for posting your question here at Brainly.

Newton's second law of motion can be expressed as Fnet = ma. The next external for acting on, say for example, a moving car are the following:

*weight due to gravity (force down)
*friction force between he road and the car's tires (force opposite the car's direction)

The expression for the net force will be  [tex]\rm F= \frac{m(v-u)}{t}[/tex].The force is given as the product of mass and change of the velocity.

What is Newton's Second Law of Motion?

Unlike the first law of motion, Newton's second law of motion is concerned with the behavior of objects for which all existing forces are imbalanced.

The second rule of motion is more quantitative, and it is frequently used to quantify what occurs when a force is applied. The second law of Newton is discussed in depth in this article.

The rate of change of momentum is equal to force.The force is given as the product of mass and change of the velocity.The impulsive force is given by the change in the momentum.

[tex]\rm I=\frac{m(v-u)}{} \\\\ \frac{m(v-u)}{}= \rm Ft \rm \\\\ \rm F= \frac{m(v-u)}{t}[/tex]

Hence the expression for the net force will be  [tex]\rm F= \frac{m(v-u)}{t}[/tex].

To learn more about the Newton's second law refer to the link;

https://brainly.com/question/23845187