Calculating Acceleration on an Inclined Plane

[myaaxcore]

Homework Statement

A 3.86 kg block slides down a smooth, fric-
tionless plane having an inclination of 28◦ .
The acceleration of gravity is 9.8 m/s2 .

Find the acceleration of the block.
Answer in units of m/s2.

Homework Equations

idk what equation to use?

The Attempt at a Solution

 

[PhanthomJay]

Newton's 2nd law. Choose the x-axis parallel to the incline, and identify the force acting parallel to the incline. Then apply Newton 2 in the direction of the incline.

 

[denverdoc]

This is a duplicate post of https://www.physicsforums.com/showthread.php?t=360749"

 

[myaaxcore]

Newton's 2nd law. Choose the x-axis parallel to the incline, and identify the force acting parallel to the incline. Then apply Newton 2 in the direction of the incline.

Thank you jay(:
And doc- I am sorry i didnt see that post show up so i posted another one

 

[denverdoc]

No problem, are you good to go now?