1)
KE = (1/2)(m)(v)^2 the 9.0 cm radius is not important for this
= (1/2)(6.7kg)(4.3 m/s)^2
= 61.9415 Joules
= 62 J rounded to the proper number of significant digits
2)
for the tip of the pole, using conservation of energy,
potential gravitational energy = kinetic energy at the bottom...