A Toy Rocket Is Launched Vertically from Ground Level at Time

question 158

Multiple Choice

A toy rocket is launched vertically from ground level at time t = 0.00 s. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 81 m and acquired an upward velocity of $40 \mathrm {~m} / \mathrm { s }$ The rocket continues to rise with insignificant air resistance in unpowered flight, reaches maximum height, and falls back to the ground. The upward acceleration of the rocket during the burn phase is closest to

• A)9.9 m/ \(\mathrm { s } ^ { 2 }\) .
• B)9.6 m/ \(\mathrm { s } ^ { 2 }\) .
• C)9.3 m/ \(\mathrm { s } ^ { 2 }\) .
• D)9.0 m/ \(\mathrm { s } ^ { 2 }\) .
• E)8.7 m/ \(\mathrm { s } ^ { 2 }\) .

---

Definitions:

Mental Health Problems

A range of mental health conditions that affect mood, thinking, and behavior, including depression, anxiety disorders, schizophrenia, eating disorders, and addictive behaviors.

Coping

Strategies that individuals use to manage the distressing problems and emotions in their lives.

Distressing Problems

Issues or challenges that cause emotional pain or discomfort to an individual.

Alarm Stage

The initial reaction of the body's stress response, characterized by the activation of the sympathetic nervous system to fight a threat or stressor.