Question

tomaz realized that the tip of a second hand on a clock rotates about the center of the clock. he watched the second hand rotate around the center of the clock for 15 seconds. which describes the rotation he observed? 270° clockwise rotation 90° clockwise rotation 180° rotation 90° counterclockwise rotation

Explanation:

Step1: Find total rotation per minute

A full clock rotation is $360^\circ$, completed in 60 seconds.

Step2: Calculate rotation per second

$\frac{360^\circ}{60} = 6^\circ$ per second

Step3: Compute 15-second rotation

$6^\circ \times 15 = 90^\circ$

Step4: Determine rotation direction

Clock hands rotate clockwise.

Answer:

90° clockwise rotation