A 35.0 kg block at rest on a horizontal frictionless table is connected to the wall via a spring with a spring constant k=25.0 N/m. A 3.60×10-2 kg bullet travelling with a speed of 490 m/s embeds itself in the block. What is the amplitude of the resulting simple harmonic motion? Okay. So If i'm not mistaken, we're looking for Amplitude or Max displacement. What I did first was try to find the intial velocity of the block with : V= ((m_1)/(m_1+m_2))*V_1_i V_1_i = 490 m/s m_1 = .036 kg m_2 = 35 kg I got apprx. .5 m/s for the final object which weighs 35.036 kg. i then found angular frequency with : w^2= (k/m) Then if found the period: w= (2*pi/T) With the period i found the frequency: T = (1/f) .. this is kinda where i get stuck .. I then assumed the time it takes to get to the max displacement is half of the period. I don't know if i can do that, but i did : ). And even after assuming that, I'm stuck. I think my knowns are, Velocity, Mass, Angular frequency, Spring constant, Period, frequency, and time. Did i do something wrong, If not, where can i go from here to find the amplitude?