An "ideal" spring with spring constant 0.45 N/m is attached to a block with mass 0.9 kg on one end and a vertical wall on the other. The floor has negligible friction, and you give the block a push and then let go. You observe that the block undergoes simple harmonic motion with a maximum speed of 2.2 m/s.
What is the angular frequency of the oscillations?
The Attempt at a Solution
angular frequency= 2*pi*(v/(2*pi*sqrt(A^2-x^2))) I don't think im doing this right because i dont know A or x