Question

A 800 kg car zooms away from a red light with an acceleration of 7.6 m/s2. What is the

average net force in Newtons that the car experiences?

Answer 1

Fnet = 13920 Newtons

Step-by-step explanation:

Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.

Mathematically, net force is given by the formula;

`Fnet = Fapp + Fg`

Where;

• Fnet is the net force

• Fapp is the applied force

• Fg is the force due to gravitation

Given the following data;

Mass, m = 800 kg

Acceleration, a = 7.6m/s²

To find the applied force;

`Fapp = ma`

Substituting into the equation, we have;

`Fapp = 800 * 7.6`

Fapp = 6080N

To find the gravitational force;

We know that acceleration due to gravity, g = 9.8m/s²

`Fg = mg`

Substituting into the equation;

`Fg = 800 * 9.8`

Fg = 7840N

To find the net force;

`Fnet = Fapp + Fg`

Substituting into the equation, we have;

`Fnet = 6080N + 7840N`

Fnet = 13920 Newton.

Therefore, the net force experienced is 13920 Newton.