# Projectile motion drag formula

###### Branham fencing columbia sc.

##### Cecilio rosario lim md

###### Csm2 msds sheet

The time of flight ends as soon as the object in projectile motion hits the floor. This happens when the vertical distance is equal to zero or, when expressed as a formula: vy * t – g * t^2 / 2 = 0. The range of the projectile refers to the total distance traveled horizontally during the entire flight time. I'm trying to model projectile motion with drag in Matlab. Everything works perfectly....except I can't figure out how to get it to stop when the "bullet" hits the ground. I initially tried an iteration loop, defining a data array, and emptying cells of that array for when the y value was negative....unfortunately the ode solver didn't like ... The free body diagram of the object in projectile motion: We can separate the forces into horizontal and vertical components. In the horizontal direction we only need to consider one force while in the vertical direction, we have two forces to con... Quoting from Wikipedia, "In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid." With your proposed equation, this is not the case, and the air resistance would cause the projectile to change direction, not just slow down.