Question

The cars on an amusement-park ride travel at a constant velocity of 4.0 m/s on a circular track

that has a radius of 4.0 m. What is the magnitude of each car's centripetal acceleration?

A-1 m/s2
B-2 m/s2
C-4 m/s2
D-3 m/s2

Answer 1

V^2=u^2+2as
V=0
a =-u^2/2s
a=[4]^2/2[4]
a=-2m/s^2