**Unformatted text preview: **the shell was shot from and let x ( t ) denote the position upward of the shell at time t . The forces acting on the object can be expressed in terms of this axis. The force due to gravity is F 1 = − mg, where g is the acceleration due to gravity near Earth. Note we have a minus force because our coordinate system was chosen with up as positive and gravity acts in a downward direction. The force due to air resistance is F 2 = − (0 . 1) v 2 . 129...

View
Full
Document