A bug walking on the circular rim of a flower

pot completes one lap around the planter in

9.798 s.

If the radius of the planter is 12.8 cm, how

fast was it traveling?

Answer in units of cm/s.

How fast in m/s?

Answer in units of m/s

The circumference of any circle is (pi) x (2 x the radius).

The circumference of the rim of the flower pot is (25.6 pi) cm.

Speed of the bug = (distance covered) / (time to cover the distance)

= (25.6 pi cm) / (9.798 sec)

= 8.208 cm/sec. (rounded)

To change units:

(8.208 cm/sec) x (1 meter / 100 cm)

= 0.082 meter/sec (rounded)

The bug's centripetal acceleration is

(speed in m/s) ² / (radius in m)

= (0.082 m/s) ² / (0.128 m)

= (0.006724 m²/s²) / (0.128 m)

= 0.0525 m/s²