Acoin completes 18 spins in 12 seconds. the centripetal acceleration of the edge of the coin is 2.2 m/s2. the radius of the coin is

0.025 m

Explanation:

The coin completes 18 revolutions in 12 seconds. The angular velocity of the coin is:

The centripetal acceleration of the edge of the coin is given by

where we have

a = 2.2 m/s^2 is the acceleration

r is the radius of the coin

Solving for r, we find

i would think it's food chain

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.