Question

a steel ball dropped from a tower strikes the ground in 3.0 seconds. Find the velocity with which the ball strikes the ground and the height of the tower in meters.

Answer 1

vf=vi+aΔt
=0-9.8*3
=-29.4 m/s

Distance
=average velocity*time
=-14.7*3
=-44.1 m

Answer 2

78

Answer 3

44.1