Question

If a stone falls from rest at the top of a mineshaft to the bottom in 6 seconds, then the depth of the shaft is about

a.180 m.
b.360 m
c.60 m.
d.36 m.

Answer 1

180 m

Step-by-step explanation:

`s=u\, t+\frac 12 \,g\,t^2 = 0\cdot 6 +\frac 12\cdot 10 \cdot 6^2 = 180`