I need help answering this question

Plss anybody know how to do this? ? i need the answers from a through d

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

From the perspective of an employee that effective channeling of work related information and concerns