Suppose a child swings around her straight arm about her shoulder joint at an angular velocity of 13 rad/s. If her arm is 40. 0 cm long, what is the speed of her hand?.

Suppose a child swings around her straight arm about her shoulder joint at an angular velocity of 13 rad/s. If her arm is 40. 0 cm long, the speed of her hand will be 5.2 m/sAngular velocity is a vector quantity and is described as the rate of change of angular displacement which specifies the angular speed or rotational speed of an object and the axis about which the object is rotating.since , angular velocity = speed / radiusgiven angular velocity = 13 rad/secradius = arm length = 40 cm = 0.4 m speed = angular velocity * radius = 13 * 0.4 = 5.2 m/sTo learn more about angular velocity here https://brainly.com/question/14769426#SPJ4