Q1. A mass-spring system oscillates on a horizontal frictionless surface with amplitude of 3.89 cm. If the spring constant is 250 N/m and the mass is 0.439 kg, how do you find out mechanical energy of the system?
Q2. A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 4.50 m/s in 0.852 s. What are the magnitudes of the linear impulse and the average total force experienced by a 65.0 kg passenger in the car during the time the car accelerates?