In order to determine the force on Skelly, use the following formula:
[tex]F=m\cdot a[/tex]where:
m: mass = 25 kg
a: acceleration = 10m/s^2
Replace the previous values of the parameters into the formula for F:
[tex]F=(25kg)(10\frac{m}{s^2})=250N[/tex]Hence, the force on Skelly is 250N