The centripetal acceleration of a material point moving in a circle with a speed of v1 = 0.6 m / s is equal to ac1 = 0.9 m / s.

The centripetal acceleration of a material point moving in a circle with a speed of v1 = 0.6 m / s is equal to ac1 = 0.9 m / s. what is the centripetal acceleration of a point when moving along the same circle with a speed v2 = 0.8 m / s

V1 = 0.6 m / s – speed of the first material point
ac1 = 0.9 m / s ^ 2
V2 = 0.8 m / s ^ 2 – speed of the second material point
the circle does not change, therefore R1 = R2 – the radii are the same
ac2 -?
ac1 = V1 ^ 2 / R1, hence the radius R1 = V ^ 2 / ac1
R1 = 0.6 ^ 2 / 0.9 = 0.4 m
R1 = R2 = 0.4 m
ac2 = V2 ^ 2 / R2
ac2 = 0.8 ^ 2 / 0.4 = 1.6 m / s ^ 2