An object of mass of 169.28 kg, travels a distance of 83.52 m in 8.4 seconds. Assuming it started from rest, what was the force in Newtons?

Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?