In this ski race the racer has limited protection, other than a helmet and the snow netting that lines the trail.

photocells convert light energy to electricity

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.