1. The problem statement, all variables and given/known data The Radius of Mars is R_m its mass is m The radius of Mars (from the center to just above the atmosphere) is R_m and its mass is m. An object is launched from just above the atmosphere of mars. A) what is the object's initial velocity if its final velocity is V_f 2. Relevant equations a=(v^2)/R <--wat v is this? W=deltaKE 3. The attempt at a solution i dont know how to start im thinking i need to calculate the gravity from mars? but if all im given is mass and radius how do i calculate it? i need to find the amount of work done by mars right?