High frequency , it is because wavelength is inversely proportional to frequency
Force = mass * acceleration = 1500kg * 8m/s²
Explanation:
We have,
Mass of an object is 0.5 kg
Force constant of the spring is 157 N/m
The object is released from rest when the spring is compressed 0.19 m.
(A) The force acting on the object is given by :
F = kx

(B) The force is simply given by :
F = ma
a is acceleration at that instant

I'm not sure...
I feel ya.