A stone is dropped down a well and it takes 1.6 seconds to hit bottom. How fast was it going right before it hit the bottom?

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray