Q1. An object has a kinetic energy of 243 J and a momentum of magnitude 20.60 kg • m/s.
(a) Find the speed of object.
(b) Find the mass of object.
Q2. A mass of 1.60 kg stretches a vertical spring 0.335 m. If the spring is stretched an additional 0.164 m and released, how long does it take to reach the (new) equilibrium position again?