A 375 g air-track glider attached to a spring with spring constant 9.50 N/m is sitting at rest on a frictionless air track. A 425 g glider is pushed toward it from the far end of the track at a speed of 96.0 cm/s . It collides with and sticks to the 375 g glider. a)What is the amplitude of the subsequent oscillations? b) What is there period? What formulas should I use, I don't seem to be using the right one.