A71.5 kg football player is gliding across very smooth ice at 2.00 m/s . he throws a 0.470 kg football straight forward. what is the player's speed afterward if the ball is thrown at 12.5 m/s relative to the ground? express your answer with the appropriate units

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.