# How does a net force affect an object?

Apr 28, 2014

The net force on an object is just the sum of all outside forces. So the affect of any non-zero net force is to cause an acceleration in the direction of the force.

For instance if we had a 2 kg ball on a number line and we then push on the ball with a 2 N force in the negative direction and a 3 N force in the positive direction then the net force on the object would be 1 N in the positive direction.

$- 2 + 3 = 1$
<----O------> = O-->

We can determine the acceleration of the object by applying Newton's Second Law.

$F = m \cdot a$

Solve for a

a = $\frac{F}{m}$

a = $\frac{1 N}{2 k g}$

So the acceleration caused by the net force in this example would be $\frac{1}{2}$ $\frac{m}{s} ^ \left(2\right)$ in the positive direction.