One object has an initial position of -40 m & and a constant velocity of 10 m/s . Anothe object has an initial position of 20 m and a constant velocity of -2 m/s .Calculate the time and position in which the two objects collide. By definition a collision is being in the same place at the sam time. Developing two equations for two unknowns (time and final position here) is a common skill required in this course.