Q1. A 0.850 kg block is attached to a spring with spring constant 16.0 N/m. While the block is sitting at rest, a student hits it with a hammer and almost immediately gives it a speed of 43.0 cm/s. What is the amplitude of the subsequent oscillations are 8.17. The block's speed at the point where x= 0.80 A?

Q2. A mass m = 86 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 18.1 m and finally a flat straight section at the same height as the center of the loop (18.1 m off the ground). Because the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it should be released above the top of the loop-the-loop height.