A force of 100 newtons is applied to a box at an angle of 36º with the horizontal. If the mass of the box is 25 kilograms, what is the horizontal acceleration of the box?

The horizontal acceleration of the box is 3.24 m/s^2.

First you find the horizontal component of the force via cosine 36 degrees.

Then with cosine 36 find the horizontal force by multiplying it with 100 N.

Then divide the horizontal force by the mass - - 25 kgs. F = ma