A high-speed dart is shot from top of a building with a speed of 150 m/s horizontally. What is the horizontal component of its velocity after 5.0 s if air resistance is neglected?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Question:**  
A high-speed dart is shot from the top of a building with a speed of 150 m/s horizontally. What is the horizontal component of its velocity after 5.0 s if air resistance is neglected?

**Explanation:**

In this problem, we are dealing with a projectile motion where a dart is fired horizontally. Since air resistance is neglected, the horizontal component of velocity remains constant throughout the motion.

- **Initial horizontal velocity (u):** 150 m/s
- **Time (t):** 5.0 s

**Key Concept:**
- In the absence of air resistance, horizontal velocity does not change, meaning the horizontal component of velocity remains constant over time.

**Therefore:**
- The horizontal component of its velocity after 5.0 seconds is **150 m/s**.
Transcribed Image Text:**Question:** A high-speed dart is shot from the top of a building with a speed of 150 m/s horizontally. What is the horizontal component of its velocity after 5.0 s if air resistance is neglected? **Explanation:** In this problem, we are dealing with a projectile motion where a dart is fired horizontally. Since air resistance is neglected, the horizontal component of velocity remains constant throughout the motion. - **Initial horizontal velocity (u):** 150 m/s - **Time (t):** 5.0 s **Key Concept:** - In the absence of air resistance, horizontal velocity does not change, meaning the horizontal component of velocity remains constant over time. **Therefore:** - The horizontal component of its velocity after 5.0 seconds is **150 m/s**.
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