# An object with a mass of #9 kg# is acted on by two forces. The first is #F_1= < -7 N , -1 N># and the second is #F_2 = < 4 N, -5 N>#. What is the objects rate and direction of acceleration?

##### 1 Answer

Mar 11, 2017

The rate of acceleration is

#### Explanation:

The resultant force is

We apply Newton's second Law

The magnitude of the acceleration is

The direction is

The angle is in the 3rd quadrant