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
isnt
d. velocity is a time-dependent property of an object, while acceleration is not.

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).