Starting at Time T = 0, an Object Moves Along

question 78

Multiple Choice

Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is given by x(t) = 75t - 1.0t³, where t is in seconds. When it momentarily stops its acceleration is:

• A) 0
• B) -73 m/s²
• C) -30 m/s²
• D) -9.8 m/s²
• E) 9.2* 10³ m/s²

---

Definitions:

Body's Defensive Reaction

The physiological responses activated by the immune system to protect the body against harmful agents, including pathogens and injuries.

Bacteria

Microscopic, single-celled organisms that exist in almost every environment on Earth and play critical roles in various biological processes.

Implicit Social Support

The perceived availability of support without explicitly seeking it, derived from one's social network, enhancing coping and stress management.

Explicit Social Support

Direct and clear offers of help, care, or encouragement from individuals within one's social network.