Question

A golfer’s arm rotates 1/2 of a revolution in 1/10 of a second. If the angular displacement is measured in radians, which statements are true? Check all that apply.

The angular velocity is 10π rad/sec.
The angular velocity is 10π rad/min.
The angular velocity is 60π rad/min.
The angular velocity is 600π rad/sec.
The angular velocity is 600π rad/min.

Answer 1

A. The angular velocity is 10π rad/sec.

E. The angular velocity is 600π rad/min.

Explanation:

on edge

Answer 2

The angular velocity is 10π rad/s or 600 rad/min.

Explanation:

angular velocity = angle/time

0.5 revolution = 0.5 × 2π = π rad

ω = θ/t = π rad/0.1 s = 10π rad/s

Convert time to minutes

ω = 10π rad/1 s × (60 s/1 min) = 600π rad/min