1.) If the penny is at a radius of 6.00 cm spinning at a speed of 3.50 rad/sec. What is the centripetal acceleration of the penny in m/s2? Enter your answer to three significant figures.

Answer 1

Ac = R omega^2
R = 0.06 meter
omega = 3.5

That assumes you want Ac at the rim of the penny.

Answer 2

linear speed: 0.2100
centripetal acceleration: 0.7350
tangential acceleration: 0.0132

How to find total acceleration in m/s^2?

Answer 3

they are perpendicular
|A| = sqrt (At^2 + Ac^2)