Firefighter Mechanical Aptitude · Question
Ignoring air resistance, if a hose stream is projected horizontally from a nozzle, how does gravity affect its horizontal velocity?
Gravity acts vertically downward and affects the vertical motion of the hose stream. In the absence of air resistance, it has no effect on the horizontal compon
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Question: Ignoring air resistance, if a hose stream is projected horizontally from a nozzle, how does gravity affect its horizontal velocity?
Answer options:
- It continuously increases the horizontal velocity.
- It continuously decreases the horizontal velocity. ✅ It has no effect on the horizontal velocity.
- It causes the horizontal velocity to fluctuate.
Correct answer: It has no effect on the horizontal velocity.
Explanation: Gravity acts vertically downward and affects the vertical motion of the hose stream. In the absence of air resistance, it has no effect on the horizontal component of velocity.
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- Scenario 1: Which simple machine uses a fulcrum to multiply force or change the direction of force?
- Scenario 2: If a hydraulic jack has a small piston with an area of 5 cm² and a large piston with an area of 50
- Scenario 3: Which of the following would require the MOST force to move?
- Scenario 4: A rope is tied to a heavy box. Instead of pulling the box directly, a firefighter wraps the rope a
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