A Particle Moves in the Xy Plane in a Circle

question 51

Multiple Choice

A particle moves in the xy plane in a circle centered on the origin. At a certain instant the velocity and acceleration of the particle are 6.0 m/s and (3.0 + 4.0 ) m/s². What are the x and y coordinates of the particle at this moment?

• A) x = 0, y = −9.0 m
• B) x = 0, y = +7.2 m
• C) x = 0, y = +9.0 m
• D) x = 0, y = −7.2 m
• E) x = 6.0 m, y = −9.0 m

---

Definitions:

Burgess Shale

A Lagerstätte in Canada in which there is a wealth of preserved fossils from the Cambrian period.

Lagerstätte

Lagerstätte (plural, Lagerstätten) is a site with an abundant supply of unusually well-preserved fossils — often including soft tissues — from the same period of time.

Cambrian

A geological time period occurring approximately 541 million years ago, notable for the Cambrian Explosion, a significant increase in the diversity of life on Earth.

Oldest Vertebrate Trackways

The earliest known fossilized paths made by the locomotion of vertebrates, providing insights into prehistoric behavior and environments.