Worksheet: Non-Free Fall Name 1. Air resistance is a acting on a moving object. If the object is falling, air resistance acts (upward, downward), 2. As a falling object gains speed, the force of air resistance (increases, decreases) until Fair = the of the object . When this happens, the net, external force acting on the object equals and the object no longer We say that the object has reached Now the object's motion will be until it hits the ground. 3. An object weighing 10 N is in free fall. The net force acting on the object = The object accelerates at m/s ?. When the object encounters 4 N of air resistance, the net force will be Now the object's acceleration will be (greater than, less than, equal to) 9.80 m/s?. When the object encounters 10 N of air resistance, the net force will be Now the object's acceleration will be 4. If Galileo had dropped a rock and a feather together off the tower, the . would have reached the ground first. Use the idea of "terminal velocity" to explain why. ablemes on Back