![]() Use the chart to estimate your freefall time according to your approximate terminal velocity and the distance in freefall.Subtract your opening altitude from your exit altitude to determine the length of your freefall.Determine your approximate terminal velocity by taking actual measurements of jumps with known exit and opening altitudes (this can be done by timing video tapes, by having someone on the ground time the skydive, or using a recording altimeter).To determine the approximate amount of freefall time to expect on a jump and to log a realistic amount of freefall time for a jump, use the following procedures:.50 mph (73.3 feet per second) for wing-suit jumps.160 mph (235 feet per second) for vertical head-down or standing orientation.120 mph (176 feet per second) for belly-to earth orientation.What is this speed in meters per second At this speed, how many meters will the. At that speed, you drop about 175 feet (53 meters) per second. What is this speed in feet per second at this speed, how many feet will the parachutist fall during 15 seconds of free fall in your computations, use the fact that 1 mile is equal to 5280 feet. Thats because in freefall, you plummet at about 120 miles per hour (193 kilometers per hour). The chart lists freefall times based on three different typical terminal velocities and provides an exit altitude reference for 3,000-foot openings. A parachutists speed during a free fall reaches 231 feet per second. A parachutists speed during a free fall reaches 153 miles per hour.skydiving discipline, e.g., vertical orientations.total weight of the jumper including equipment. ![]()
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