Awrecking ball is hanging at rest from a crane when suddenly the cable breaks. the time it takes for the ball to fall halfway to the ground is 1.2 s. find the time it takes for the ball to fall from rest all the way to the ground.

i will give tons of points away to whoever answers this

It should be d if not then c

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

Your answer is 120miles 

Ithink the answer is fusion