Question

Ball bearings can be made by letting spherical drops of molten metal fall inside a tall tower - called a shot tower - and solidify as they fall. If a bearing needs 4.0 s to solidify enough for impact, how high must the tower be?

Answer 1

height of tower= 78.48 meters

Step-by-step explanation:

So here are your givens:

time(t)= 4 s.

initial velocity(u) = 0 m/s

acceleration due to gravity (g)= 9.81 m/s^2

distance(s)=s meters

using one of Newton's equation of motion ;

`s=ut+(1)/(2) gt^(2) \\s=0(4)+(1)/(2)(9.81)(4)^(2) \\s=(1)/(2) (9.81)(16)\\s=(156.96)/(2) \\s=78.48`

height of the tower from the ground=total distance covered by bearing

height of tower= 78.48 meters