in an experiment, students use motion sensors to measure the speed of objects and , of masses and , respectively, that collide head-on while moving along a smooth horizontal surface. consider velocity to the right to be positive. all motion is along a straight line. the speeds of object are before the collision and after the collision. the speeds of object are before the collision and after the collision. before the collisions, object is moving to the right and and object is moving to the left. both objects reverse their direction of motion during the collision, as shown.
