Question

A roller coaster is designed such that riders experience "weightlessness" as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between

(a) 16 m/ and 17 m/

(b) 13 m/ and 14 m/

(c) 14 m/ and 15 m/

(d) 15 m/ and 16 m/

Answer 1

The correct option is (c) 14 m/ and 15 m/.

Explanation:

i.e.. Between 14 and 15 m/*.