A Projectile Starts at the Coordinate Origin, Where the Displacement $\theta$

question 10

Multiple Choice

A projectile starts at the coordinate origin, where the displacement vector also originates. The initial velocity, v0, makes an angle $\theta$ 0 with the horizontal where 0 < $\theta$ 0 < 90 $\degree$ . At the instant when the projectile is at the highest point of its trajectory, the displacement, velocity and acceleration vectors are $\overrightarrow{\mathbf{r}}$ , $\overrightarrow{\mathbf{v}}$ and $\overrightarrow{\mathbf{a}}$ . Which statement is true?

• A) \(\overrightarrow{\mathbf{r}}\) is parallel to \(\overrightarrow{\mathbf{v}}\) .
• B) \(\overrightarrow{\mathbf{r}}\) is perpendicular to \(\overrightarrow{\mathbf{v}}\) .
• C) \(\overrightarrow{\mathbf{v}}\) is parallel to \(\overrightarrow{\mathbf{a}}\) .
• D) \(\overrightarrow{\mathbf{v}}\) is perpendicular to \(\overrightarrow{\mathbf{a}}\) .
• E) \(\overrightarrow{\mathbf{r}}\) is perpendicular to \(\overrightarrow{\mathbf{a}}\) .

---

Definitions:

Alter

In sociological terms, this refers to the "other" in social interactions, highlighting the role of social counterparts and the relational aspect of personal identity.

Gender Ideology

A set of beliefs and attitudes about gender roles and identities that shape societal norms and individual behaviors regarding gender.

Masculine Roles

Socially constructed behaviors, activities, and attributes that a given society considers appropriate for men and boys.

Feminine Roles

Socially expected behaviors, tasks, and responsibilities that are typically associated with women or considered appropriate for women within a given society.