Question1
You encounters a moving walkway that is 91 long and has the speed of 2.1 relative to the ground. How long would it take you to cover the 91 length of the walkway if, once you get on walkway, you at once turns around and start walking in the opposite direction with a speed of 1.5 relative to the walkway?
Question2
A father (m = 73 kg) and son (m = 43 kg) are standing facing each other on a frozen pond. The son pushes on father and finds himself moving backward at 3 m/s after they have separated. How fast will the father be moving?
Question3
For a damped oscillator with a mass of 340 g, a spring constant 140 N/m and a damping coefficient of 71 g/s, what is the ratio of an amplitude of the damped oscillations to an initial amplitude at the end of 26 cycles?