Answer:
Personal care and services workers.
Explanation:
Human services workers are employed to help people with challenges, improve their lives. They can help the disabled, mentally ill people, children living in troubled homes, elderly people, etc., to have a better life. After training, some can work as personal care workers, pre-school teachers, etc.
Providing personalized services require a great deal of care and vigilance. Therefore, personal care and services workers should have a great sense of visual style in order to carry out their tasks.
Explanation:
Velocity is a vector quantity. Velocity = speed +direction.
In this problem, we can say that any time during their trip their velocity was -20 m/s. It is due to the above reason that the velocity is a vector.
When the displacement of the object is negative, the average velocity will be negative.
For example, when an object moves in the negative direction, it will have negative velocity.
