An object is moving around two circular arcs at a constant speed. The first arc has a radius of 10 m and the second arc has a radius of 25 m. By what factor does the centripetal acceleration change from the first arc to the second arc? 

O It decreases by a factor of 2.5^2 

O It decreases by a factor of sqrt(2.5)

O It increases by a factor of 2.5

O It decreases by a factor of 2.5 

O It increases by a factor of sqrt(2.5) 

O It increases by a factor of 2.5^2