The huge crowd cheered as the ball approached the hole, and the student
asked me if sound affected the ball near the cup. I had never seen this
clip before and had to watch it several times. It appears that the ball
always has momentum.
I am now wondering -- as my student did: If the ball really did stop
momentarily, could longitudinal sound vibrations from the nearby roaring
crowd shake the ground enough to slightly move the ball into the hole?