Part E: What was the ball's launch angle in degrees?

College Physics
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Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Part E: What was the ball's launch angle in degrees?

### Part C

**Determine the ball's velocity at \( t = 3 \, \text{s} \).**

- **Options:**
  - \( 2.00 \hat{i} \, \text{m/s} \)
  - \( (2.00 \hat{i} + 4.00 \hat{j}) \, \text{m/s} \)
  - \( (2.00 \hat{i} + 2.00 \hat{j}) \, \text{m/s} \)
  - \( (2.00 \hat{i} - 2.00 \hat{j}) \, \text{m/s} \)

- **Selected Answer:** \( (2.00 \hat{i} - 2.00 \hat{j}) \, \text{m/s} \) 
- **Status:** Correct

### Part D

**What is the value of \( g \) on Planet Exidor?**

- **Express your answer with the appropriate units.**

- **Answer:** \( 2.00 \, \text{m/s}^2 \)
- **Status:** Correct

> *Note:* Use the hints provided for additional guidance.
Transcribed Image Text:### Part C **Determine the ball's velocity at \( t = 3 \, \text{s} \).** - **Options:** - \( 2.00 \hat{i} \, \text{m/s} \) - \( (2.00 \hat{i} + 4.00 \hat{j}) \, \text{m/s} \) - \( (2.00 \hat{i} + 2.00 \hat{j}) \, \text{m/s} \) - \( (2.00 \hat{i} - 2.00 \hat{j}) \, \text{m/s} \) - **Selected Answer:** \( (2.00 \hat{i} - 2.00 \hat{j}) \, \text{m/s} \) - **Status:** Correct ### Part D **What is the value of \( g \) on Planet Exidor?** - **Express your answer with the appropriate units.** - **Answer:** \( 2.00 \, \text{m/s}^2 \) - **Status:** Correct > *Note:* Use the hints provided for additional guidance.
**Educational Website Content on Projectile Motion**

**Introduction:**

A physics student on Planet Exidor conducts an experiment by throwing a ball. The ball follows a parabolic trajectory, as seen in the accompanying diagram (Figure 1). The position of the ball is marked at one-second intervals up to \( t = 3 \) seconds. At \( t = 1 \) second, the ball's velocity is \( \vec{v} = (2.0\hat{i} + 2.0\hat{j}) \, \text{m/s} \).

**Diagram Explanation (Figure 1):**

The diagram illustrates the parabolic path of the ball. The coordinate system has the x-axis representing horizontal displacement and the y-axis representing vertical displacement. Key points are labeled at \( 0 \) seconds, \( 1 \) second, \( 2 \) seconds, and \( 3 \) seconds. At \( t = 1 \) second, a vector indicates the velocity \( \vec{v} = (2.0\hat{i} + 2.0\hat{j}) \, \text{m/s} \).

**Problem-Solving:**

**Part A:**

*Determine the ball's velocity at \( t = 0 \) seconds.*

- Options:
  - \( 2.0\hat{i} \, \text{m/s} \)
  - **(Selected) \( (2.0\hat{i} + 4.0\hat{j}) \, \text{m/s} \)**
  - \( (2.0\hat{i} + 2.0\hat{j}) \, \text{m/s} \)
  - \( (2.0\hat{i} - 2.0\hat{j}) \, \text{m/s} \)

- **Correct Answer:** \( (2.0\hat{i} + 4.0\hat{j}) \, \text{m/s} \)

**Part B:**

*Determine the ball's velocity at \( t = 2 \) seconds.*

- Options:
  - \( 2.0\hat{i} \, \text{m/s} \)
  - \( (2.0\hat{i} + 4.0\hat{j}) \, \text{m/s} \)
Transcribed Image Text:**Educational Website Content on Projectile Motion** **Introduction:** A physics student on Planet Exidor conducts an experiment by throwing a ball. The ball follows a parabolic trajectory, as seen in the accompanying diagram (Figure 1). The position of the ball is marked at one-second intervals up to \( t = 3 \) seconds. At \( t = 1 \) second, the ball's velocity is \( \vec{v} = (2.0\hat{i} + 2.0\hat{j}) \, \text{m/s} \). **Diagram Explanation (Figure 1):** The diagram illustrates the parabolic path of the ball. The coordinate system has the x-axis representing horizontal displacement and the y-axis representing vertical displacement. Key points are labeled at \( 0 \) seconds, \( 1 \) second, \( 2 \) seconds, and \( 3 \) seconds. At \( t = 1 \) second, a vector indicates the velocity \( \vec{v} = (2.0\hat{i} + 2.0\hat{j}) \, \text{m/s} \). **Problem-Solving:** **Part A:** *Determine the ball's velocity at \( t = 0 \) seconds.* - Options: - \( 2.0\hat{i} \, \text{m/s} \) - **(Selected) \( (2.0\hat{i} + 4.0\hat{j}) \, \text{m/s} \)** - \( (2.0\hat{i} + 2.0\hat{j}) \, \text{m/s} \) - \( (2.0\hat{i} - 2.0\hat{j}) \, \text{m/s} \) - **Correct Answer:** \( (2.0\hat{i} + 4.0\hat{j}) \, \text{m/s} \) **Part B:** *Determine the ball's velocity at \( t = 2 \) seconds.* - Options: - \( 2.0\hat{i} \, \text{m/s} \) - \( (2.0\hat{i} + 4.0\hat{j}) \, \text{m/s} \)
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