Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 4.50 m/s at the bottom of the rise. Find the translational speed at the top

i don't understand. explain it clearly

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j