Physics help ??
the sum of the forces in the x direction is
The horizontal forces in this situation will be the force of friction (a negative force) and the horizontal component of the applied force.
By trigonometry we see that
#F_(A"horizontal") = 28cos(12˚) = 27.4 N#
You should subtract the force of friction from this. Therefore, the net horizontal force will be
If you knew the mass of the tourist you could find the acceleration from this by dividing the net force by the mass (since
Hopefully this helps!