To find the force acting on an object, you can use Newton's second law of motion. According to Newton's second law, the force (F) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a).
So the formula to calculate force is:
F = m * a
Plugging in the given values:
m = 500 kg
a = 15 m/s^2
F = 500 kg * 15 m/s^2
F = 7500 N
Therefore, the force acting on the object is 7500 Newtons.