Does anyone know how to find a formula for air resistance if i shoot an object at a 0 degree angle and know mass, time, distance travelled, drop and initial velocity? I got to Air Resistance (AR) For Vertical Drop: AR=1/2 g((∆s_h)/V_ih )^2)-∆s_v g = gravity ∆s_h= delta distance horizontal V_ih = horizontal initial velocity ∆s_v= delta distance vertical This is just for difference in distance. What would a unit that i could use to describe air resistance be? I may be and probably am completely off so if i am please correct me. Thanks so much if you can help me.