What is the difference between velocity and acceleration?

a.
velocity describes an object's position and acceleration describes how fast it moves.
b.
velocity is how fast an object moves and acceleration is the rate of change in velocity.
c.
velocity is used to determine the magnitude of force acting on an object, and acceleration isn't.
d.
velocity is a time-dependent property of an object, while acceleration is not.

Latesha moore has a choice at work between a traditional health insurance plan that pays 80 percent of the cost of doctor visits after a $250 deductible and an hmo that charges an $8 co-payment per visit + a $20 monthly premium deduction from her paycheck. latesha anticipates seeing a doctor once a month for her high blood pressure. the cost of each office visit is $50. she normally sees the doctor an average of three times a year for other health concerns. comment on the difference in costs between the two health care plans and the advantages and disadvantages of each.