Question

Carl drops a 2.42 kg rock into a pit. The pit is 13 m deep. How long does it take for the rock to fall to the bottom of the pit?

Answer 1

1.63 s

Step-by-step explanation:

Mass of the rock is irrelavent...not needed.

d = 1/2 a t^2

13 = 1/2 ( 9.81) t^2 t = 1.63 seconds