A Particle Moving Along the X Axis Has a Position

question 38

Multiple Choice

A particle moving along the x axis has a position given by x = (24t - 2.0t3) m, where t is measured in s. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?

• A)24 m/s2
• B)zero
• C)12 m/s2
• D)48 m/s2
• E)36 m/s2

Identify major hominin fossils and their contributions to understanding human evolution.

Grasp the basic principles of developmental biology in animals, including cleavage patterns.

Explain the concept of cultural evolution in humans.

Understand the impact of continental drift on the evolution of life on Earth.

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Definitions:

Reabsorption

The process by which substances are taken back into the bloodstream from the fluids in the kidneys.

Malpighian Tubules

Excretory structures in insects and some other arthropods that remove wastes from the body and help in osmoregulation.

Hemolymph

Fluid that circulates in an open circulatory system.

Insects

A class of arthropods characterized by a three-part body (head, thorax, abdomen), three pairs of jointed legs, compound eyes, and one pair of antennae.