Let us compare these results to our expectations. We expected the horizontal distance to be on the order of 100 m, and our result is indeed on this order of magnitude. It might be useful to calculate the time interval that the jumper is in the air and compare it to our estimate of 4 s.
Suppose a ski-jumper lands at a point 157 m down the incline of the track described in the example (with a horizontal take-off). What was her speed at take-off?