[required, 12 pts] A pаrticle оf mаss m аnd speed v is mоving nоrth. It collides with an identical particle which is moving east with speed v. As a result of the collision, the two particles stick together. What is the speed of the composite particle? In order to receive credit, in addition to your response, you must also supply some work or reasoning to support your answer. (a) v2{"version":"1.1","math":"v2"} (b) v2{"version":"1.1","math":"v2"} (c) v{"version":"1.1","math":"v"} (d) 2v{"version":"1.1","math":"2v"} (e) 2v{"version":"1.1","math":"2v"}