A 25-Kg Boy Jumps Off of a 100-Kg Raft

question 11

Multiple Choice

A 25-kg boy jumps off of a 100-kg raft.If the boy jumps off at a speed of 4.90 m/s relative to the lake,what is the speed of the raft relative to the boy? Ignore the effects of water resistance.

• A)7.5 m/s
• B)6.1 m/s
• C)19.6 m/s
• D)2.5 m/s
• E)1.2 m/s

---

Definitions:

Sinus Tachycardia

A condition where the heart rate exceeds the normal resting rate, typically defined as a heart rate greater than 100 beats per minute in adults.

Electrocardiogram Monitor

A device used to record the electrical activity of the heart over a period of time, detecting cardiac abnormalities.

Palpitations

The sensation of having rapid, fluttering, or pounding heartbeats.

Chest Tube

A tube inserted through the chest wall to remove air, fluid, or pus from the pleural space.