Question

?

Answer 1

for centripedal motion a = v^2/r (would suggest writing this down)

Answer 2

3.04=v^2/21

Answer 3

keep in mind it says 3.04g not just 3.04

g means 9.8 m/s/s

so 3.04g = 9.8 * 3.04

Answer 4

29.8

Answer 5

so 29.8==v^2/21

Answer 6

D?

Answer 7

good