Find the indicated quantities for the appropriate arithmetic sequence.

When a stone is dropped from the edge of a cliff at the Grand Canyon, it falls 16 ft during the first second, 48 ft during the second second, 80 ft during the third second, 112 ft during the fourth second, and so on. Find 

(a) The distance the stone falls during the tenth second.

(b) The total distance the stone falls during the first 10 seconds