A Projectile Is Fired from Point 0 at the Edge

question 28

Short Answer

A projectile is fired from point 0 at the edge of a cliff,with initial velocity components of and ,as shown in the figure.The projectile rises and then falls into the sea at point P.The time of flight of the projectile is 40.0 s,and it experiences no appreciable air resistance in flight.What is the magnitude of the velocity of the projectile 21.0 s after it is fired?

---

Definitions:

Chronological Age

The amount of time that has passed since a person's birth, usually expressed in years.

Cognitive Competencies

The mental skills and abilities required to perform tasks, solve problems, and make decisions effectively.

Subjective Ages

Individuals' personal perceptions or feelings about their own age, which can differ significantly from their chronological age.

Aging

The process of becoming older, a series of biological changes that follow a natural progression in every living organism.