A 2.00 kg. frictionless block is attached to an ideal spring with force constant 300 n/m. At t=0 the block has velocity -4.0 m/s and displacement +.200 m.
A.) I found the amplitude to be .382m and the phase angle to be 1.023 rad.
B.) what is the position of the block when its speed is 2.5 m/s?