One of the equations for force is: Force = mass × acceleration.
The force and mass are given and so:
F=15N
m=10kg
By plugging in these values we obtain:
[tex]F=ma\\\\15=10(a)\\[/tex]
[tex]\frac{15}{10}=\frac{10(a)}{10}\\\\a=\frac{15}{10}=1.5m/s^2[/tex]
So the acceleration is a=1.5m/s^2