A ball dropped into a hole reaches a depth $d = 4.9t^{2}$ meters, where $t$ is the time in seconds since it was dropped.

(a) Identify the coefficient and the exponent of this power function.
Exponent = help (numbers)
Coefficient = help (numbers)

(b) How deep is the ball after 2 seconds? Include units in your answer.
help (units)

(c) If the ball hits the bottom of the hole after 6 seconds, how deep is the hole? Include units in your answer.
help (units)