Which statements about acceleration are true?

check all that apply.

a. the symbol for acceleration is .
b. for acceleration, you must have a number, a unit, and a direction.
c. to calculate acceleration, divide the change in velocity by the change in time.
d. the si units for acceleration are miles per hour per second.

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.