Acoin is dropped into a deep well and the time take to hit the bottom is measured to be 2.48s. calculate the depth of the well

Well depth is 30.17 m

Explanation:

Use equation S=G*t^2/2

time of coin need to hit the bottom of well is 2.48 s.

G(gravity)=9.81 m/s"2

S=9.81m/s"2*2.48s*2.48s/2

S=9.81m/s"2*6.15s"2/2

S=60.335m/2

S=30.17 m

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

the total distance traveled by the car is

30km + 49km = 79 km .