CQ-1. A ball is thrown vertically upwards. After the ball is released and is moving upwards towards its peak, it slows down. During this time, a) the ball is experiencing an unbalanced force; it is directed downwards. b) the ball is experiencing an unbalanced force; it is directed upwards. e there are no forces whatsoever acting upon the ball. d) the forces acting upon the ball are balanced. none of these.

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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**Text Transcription for Educational Website**

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**Conceptual Questions:**

**CQ-1.** A ball is thrown vertically upwards. After the ball is released and is moving upwards towards its peak, it slows down. During this time,  
- a) the ball is experiencing an unbalanced force; it is directed downwards.
- b) the ball is experiencing an unbalanced force; it is directed upwards.
- c) there are no forces whatsoever acting upon the ball.  
- d) the forces acting upon the ball are balanced.
- e) none of these.

(Answer marked: a)

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**CQ-2.** For the following physical situation, identify the forces that are exerted on the object. Circle all that apply.

*A box (object) hangs from a rope.*

- a) Gravitational force
- b) Frictional force
- c) Normal force
- d) Tension
- e) Magnetic force
- f) Spring force
- g) Air resistance

(Answers circled: a, d)

*Diagram Explanation:* 
The diagram shows a box hanging from a rope attached to a ceiling or beam. The diagram is a simplistic representation illustrating the setup for analyzing the forces acting on the box.

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**CQ-3.** For all the forces chosen in CQ-2, identify the reaction forces and the objects between which they act.

- **Normal Force:** *(This response is marked incorrect, with feedback indicating misunderstanding of the scenario.)*
- **Tension Force:** Tension exerted by the string to the box is due to elasticity and intermolecular forces transmitted.
  *(Feedback: "What’s the reaction force?")*
- **Gravitational Force:** The box is being pulled downward.
  *(Feedback indicates clarification needed on "pulling down on an object.")*

*General Feedback:* The handwritten corrections suggest a misunderstanding of identifying the correct reaction forces in context with Newton’s Third Law of Motion.

--- 

**Note:** This transcription presents the original text content from the educational material, including user responses and feedback for instructional purposes.
Transcribed Image Text:**Text Transcription for Educational Website** --- **Conceptual Questions:** **CQ-1.** A ball is thrown vertically upwards. After the ball is released and is moving upwards towards its peak, it slows down. During this time, - a) the ball is experiencing an unbalanced force; it is directed downwards. - b) the ball is experiencing an unbalanced force; it is directed upwards. - c) there are no forces whatsoever acting upon the ball. - d) the forces acting upon the ball are balanced. - e) none of these. (Answer marked: a) --- **CQ-2.** For the following physical situation, identify the forces that are exerted on the object. Circle all that apply. *A box (object) hangs from a rope.* - a) Gravitational force - b) Frictional force - c) Normal force - d) Tension - e) Magnetic force - f) Spring force - g) Air resistance (Answers circled: a, d) *Diagram Explanation:* The diagram shows a box hanging from a rope attached to a ceiling or beam. The diagram is a simplistic representation illustrating the setup for analyzing the forces acting on the box. --- **CQ-3.** For all the forces chosen in CQ-2, identify the reaction forces and the objects between which they act. - **Normal Force:** *(This response is marked incorrect, with feedback indicating misunderstanding of the scenario.)* - **Tension Force:** Tension exerted by the string to the box is due to elasticity and intermolecular forces transmitted. *(Feedback: "What’s the reaction force?")* - **Gravitational Force:** The box is being pulled downward. *(Feedback indicates clarification needed on "pulling down on an object.")* *General Feedback:* The handwritten corrections suggest a misunderstanding of identifying the correct reaction forces in context with Newton’s Third Law of Motion. --- **Note:** This transcription presents the original text content from the educational material, including user responses and feedback for instructional purposes.
**CQ-5.** In a physics lab, two carts of varying mass collide on a low-friction track in such a manner that the system can be considered as an isolated system. The before- and after-collision velocities of the carts are represented by vector arrows.

### **Before Collision**
- Two carts are shown, one with mass \( m_1 \) and the other with mass \( m_2 \).
- Cart \( m_1 \) is moving with velocity \( V_A \) to the right.
- Cart \( m_2 \) is moving with velocity \( V_B \) to the right as well.

### **After Collision**
- Cart \( m \) (formerly \( m_1 \)) continues to move to the right with velocity \( V_A \).
- The velocity of \( m \) (formerly \( m_2 \)) is unknown and marked as \( V_B = ??? \).

### **Velocity Options for \( V_B \) After Collision:**
- **a.** \( V_B \) to the right.
- **b.** \( V_B \) to the right, with a longer arrow indicating possibly a higher speed.
- **c.** \( V_B \) to the right, with another variation of arrow length.
- **d.** \( V_B \) to the right, longest arrow indicating possibly the highest speed of all options.
- **e.** \( V_B \) downward and to the left (this option is marked incorrect with a cross).
- **f.** \( V_B \) to the left.
- **g.** \( V_B \) to the left, with a longer arrow indicating possibly a higher speed.
- **h.** \( V_B \) to the left, with another variation of arrow length.

This exercise is designed to determine the possible velocity outcomes after a collision in an isolated system.
Transcribed Image Text:**CQ-5.** In a physics lab, two carts of varying mass collide on a low-friction track in such a manner that the system can be considered as an isolated system. The before- and after-collision velocities of the carts are represented by vector arrows. ### **Before Collision** - Two carts are shown, one with mass \( m_1 \) and the other with mass \( m_2 \). - Cart \( m_1 \) is moving with velocity \( V_A \) to the right. - Cart \( m_2 \) is moving with velocity \( V_B \) to the right as well. ### **After Collision** - Cart \( m \) (formerly \( m_1 \)) continues to move to the right with velocity \( V_A \). - The velocity of \( m \) (formerly \( m_2 \)) is unknown and marked as \( V_B = ??? \). ### **Velocity Options for \( V_B \) After Collision:** - **a.** \( V_B \) to the right. - **b.** \( V_B \) to the right, with a longer arrow indicating possibly a higher speed. - **c.** \( V_B \) to the right, with another variation of arrow length. - **d.** \( V_B \) to the right, longest arrow indicating possibly the highest speed of all options. - **e.** \( V_B \) downward and to the left (this option is marked incorrect with a cross). - **f.** \( V_B \) to the left. - **g.** \( V_B \) to the left, with a longer arrow indicating possibly a higher speed. - **h.** \( V_B \) to the left, with another variation of arrow length. This exercise is designed to determine the possible velocity outcomes after a collision in an isolated system.
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