Problem 3) A certain spring stretches by 20 cm when a force of 5 Newtons is applied to it. a) If a mass of 1 kg is hung on the spring, what will be the frequency of oscillation? b) If you want the frequency to be twice as large, what mass should you attach? Problem 4) Velocity a) A bicyle rider covers a distance of 2.5 miles in 20 minutes. At what speed does the rider travel? Give your answer in miles/minute and milkes/hour. b) A car takes three hours to drive from Madison to Chicago (150 miles). What is the average speed of travel? Page 3 of 4 c) You are walking on a path on the edge of a canyon. You clap your hands, and you hear an echo 3 seconds after you clap. How wide is the canyon