A force of 10 N is applied downward at an angle of 30ø with the horizontal to a 5 kg box sitting on the floor.

Question

The resulting horizontal acceleration of the box has magnitude

Answer 1

Now, Assume no friction then only force is the force you apply then continue with our famous formula :) F=m*a ... then you want to find the horizontal acceleration means you need the horizontal force.. Then take the cosine of the force F.horizontal=10*cos(30)=mass* a

a=10*cos(30)/5=1.732 m/s^2

Answer 2

f=10N
q=30
horizontal force =fcosq=10*(3)^1/2 /2
=8.66
this force will cause acceleration
8.66=ma
a=8.66/5=1.73