(a) Two go-karts, A and B, travel around two circular tracks of radius 5 m and 10 m, respectively, each in 10.34 s. Does A or B have the greater acceleration? Which has the greater speed?
(b)If instead the two go-karts travel around the two tracks at the same speed, which has the greater acceleration, A or B? Which takes less time to complete one revolution?
A:
v = 10 pi/(10.34)
Ac = v^2/r = 20 pi^2/(10.34)^2
B:
v = 20 pi/(10.34)
Ac = 40 pi^2/(10.34)^2