---
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entity_type: "chapter"
id: "69c3d228632adcb41937b687"
title: "Motion-in-Action Relay"
board: "CBSE"
curriculum: "CBSE"
class: "Class 8"
subject: "Physical Education and Well Being"
book: "Khel Yatra"
chapter: "Motion-in-Action Relay"
chapter_slug: "motion-in-action-relay"
canonical_url: "https://www.edzy.ai/cbse-class-8-physical-education-and-well-being-khel-yatra-motion-in-action-relay"
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source: "Edzy"
version: 1
last_updated: "2026-06-20"
---

# Motion-in-Action Relay

The Motion-in-Action Relay is designed to help students understand and experience linear motion, rotational motion, and projectile motion through engaging relay-style activities.

---

## Knowledge Snapshot

| Field | Details |
| :--- | :--- |
| Class | Class 8 |
| Subject | Physical Education and Well Being |
| Book | Khel Yatra |
| Chapter | Motion-in-Action Relay |
| Pages | 18-21 |

---

## Chapter Summary

### Short Summary
The chapter introduces a relay activity that teaches students about linear, rotational, and projectile motion, with practical stations for measurement and team competition.

### Detailed Summary
In the Motion-in-Action Relay, students engage in different stations to explore linear motion through running, rotational motion by spinning, and projectile motion by throwing. They record measurements in both SI and CGS units, observe the effects of speed and angles in real-time, and earn points based on performance in teams. The activity encourages discussion and understanding of motion types in sports and daily life, reinforcing concepts of force and physics in a playful manner.

---

## Topic-Wise Explanation

### Introduction to Motion-in-Action Relay
The relay format is structured to provide hands-on experience with various types of motion.

### Linear Motion – Running
Station 1 involves a 20-meter straight path where students time their runs, focusing on recording the speed of linear motion.

### Rotational Motion – Spinning
Station 2 requires students to spin around a cone three times and sprint to the next station, showcasing rotational dynamics.

### Projectile Motion – Throwing
At Station 3, students throw a softball towards a target while measuring the distance the ball travels, emphasizing projectile motion principles.

### Recording Measurements
Students note time and distance in both SI and CGS units after completing each motion activity, ensuring understanding of measurement conversions.

### Scoring System and Team Points
Teams score points based on their performance at each station, fostering competitive spirit and teamwork.

### Discussion and Analysis
Post-activity discussions center on experiences and observations regarding motion types, speed, and angles, deepening conceptual understanding.

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## Core Ideas

| Idea | Explanation |
| :--- | :--- |
| Understanding Motion | Engaging with different motions helps elucidate the principles of physics in activities and sports. |

---

## Key Concepts

| Concept | Meaning |
| :--- | :--- |
| Linear Motion | Motion along a straight path at a constant speed. |
| Rotational Motion | Circular movement around a fixed point or axis. |
| Projectile Motion | The motion of an object thrown into the air under the influence of gravity.

---

## Important Points for Revision

* Motion-in-Action Relay incorporates three types of motion.
* Students compete in teams at various motion stations.
* SI units (metres, seconds) and CGS units (centimetres, seconds) are used for measurements.
* The scoring system rewards teams based on their performance.
* Discussions focus on the relationship between speed, angles, and motion outcomes.

---

## Vocabulary and Glossary

| Word / Phrase | Meaning |
| :--- | :--- |
| Relay | A race in which athletes take turns to perform a segment. |
| SI Units | International System of Units for measurement. |
| CGS Units | Centimetre-gram-second system of units. |

---

## Practice Questions

### Short Answer Questions
1. What types of motion are explored in the Motion-in-Action Relay?
2. How is the time recorded at Station 1?
3. What is the scoring system for the relay?
4. How is rotational motion demonstrated at Station 2?
5. Why is it important to measure in both SI and CGS units?

### Long Answer Questions
1. Describe the activities conducted at each station of the Motion-in-Action Relay and their significance in learning about motion.
2. Discuss how students can analyze the effects of speed and angle in projectile motion during the activity.
3. Explain the importance of teamwork in the Motion-in-Action Relay and how it influences learning outcomes.

---

## Related Concepts

| Concept | Explanation |
| :--- | :--- |
| Centripetal Force | The force required to make an object move in a circular path, essential in rotational motion activities. |

---

## Source Attribution

| Field | Value |
| :--- | :--- |
| Source | Edzy |
| Reference Type | examSubjectBookChapter |
| Reference ID | 69c3d228632adcb41937b687 |
| Canonical URL | https://www.edzy.ai/cbse-class-8-physical-education-and-well-being-khel-yatra-motion-in-action-relay |
| Markdown URL | https://www.edzy.ai/okf/chapter/cbse-class-8-physical-education-and-well-being-khel-yatra-motion-in-action-relay.md |