1. The problem statement, all variables and given/known data An athlete executing a long jump leaves the ground at a 29.6° angle and travels 7.43 m. What was the take-off speed? I have 4 unknown variables: t, initial velocity in the x direction (Vix), initial velocity in the y direction (Viy). and the initial speed which I'm trying to find (Vi). Which kinematic equations do I use? I've been stuck on this problem for a day now.