Motion in a Plane Class 11 Case Study Questions Physics Chapter 3

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Last Updated on May 18, 2025 by XAM CONTENT

Hello students, we are providing case study questions for class 11 Physics. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 11 Physics. In this article, you will find case study questions for cbse class 11 Physics chapter 3 Motion in a Plane.

Chapter	Motion in a Plane
Type of Questions	Case Study Questions
Nature of Questions	Competency Based Questions
Board	CBSE
Class	11
Subject	Physics
Useful for	Class 11 Studying Students
Answers provided	Yes
Difficulty level	Mentioned
Important Link	Class 11 Physics Chapterwise Case Study

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Table of Contents

Case Study Questions on Motion in a Plane

Case Study Question 1:

Projectile Motion – Ball Thrown from a Height

Passage:
A ball is projected with a speed of 20 m/s at an angle of 30° above the horizontal from the top of a building 25 m high. The student is asked to find the time of flight, maximum height from the ground, and range of the projectile. Air resistance is negligible.

Motion in a Plane Class 11 Case Study Questions Physics Chapter 3-1

Q1. What is the horizontal component of the initial velocity?
(a) $10 \mathrm{~m} / \mathrm{s}$
(b) $20 \cos 30^{\circ}$
(c) $20 \sin 30^{\circ}$
(d) $10 \sqrt{3} \mathrm{~m} / \mathrm{s}$

Q2. What is the time taken to reach the highest point (ignore height of building)?
(a) $\frac{20 \sin 30^{\circ}}{g}$
(b) $\frac{20 \cos 30^{\circ}}{g}$
(c) $\frac{10}{g}$
(d) $\frac{5}{g}$

Q3. Which of the following quantities remains constant throughout the motion (neglect air resistance)?
(a) Vertical velocity
(b) Horizontal velocity
(c) Acceleration in vertical direction
(d) Speed

Q4. Which of the following equations is best used to find the maximum height from the ground?
(a) $H=\frac{u^2 \sin ^2 \theta}{2 g}$
(b) $H=u t+\frac{1}{2} a t^2$
(c) $R=\frac{u^2 \sin 2 \theta}{g}$
(d) $v^2=u^2+2 a s$

Answers:
Q1. (b)
Q2. (a)
Q3. (b)
Q4. (a)

Case Study Question 2:

River Boat Problem

Passage:
A boat wants to cross a river flowing eastward with a speed of 4 m/s. The boat can row at 5 m/s in still water. The pilot aims the boat perpendicular to the river bank (i.e., due north). Students must calculate the actual path of the boat and the time taken to cross the river of width 100 m.

Q1. What is the boat’s velocity component perpendicular to the river (northward)?
(a) $4 \mathrm{~m} / \mathrm{s}$
(b) $5 \mathrm{~m} / \mathrm{s}$
(c) $3 \mathrm{~m} / \mathrm{s}$
(d) $\sqrt{5^2-4^2}$

Q2. How much time will the boat take to cross the river?
(a) 20 s
(b) 25 s
(c) 30 s
(d) 40 s

Q3. What will be the drift (distance carried away downstream) due to river flow?
(a) 20 m
(b) 80 m
(c) 100 m
(d) 0 m

Q4. What is the resultant speed of the boat with respect to the ground?
(a) $4 \mathrm{~m} / \mathrm{s}$
(b) $5 \mathrm{~m} / \mathrm{s}$
(c) $\sqrt{41} \mathrm{~m} / \mathrm{s}$
(d) $3 \mathrm{~m} / \mathrm{s}$

Answers:

Q1. (b)
Q2. $t=\frac{100}{5}=20 \mathrm{~s} \rightarrow$ (a)
Q3. Drift $=4 \times 20=80 \mathrm{~m} \rightarrow$ (b)
Q4. $\sqrt{5^2+4^2}=\sqrt{41} \approx 6.4 \mathrm{~m} / \mathrm{s} \rightarrow$ (c)

Case Study Question 3:

Uniform Circular Motion – Satellite Orbit

Passage:
A satellite is moving in a circular orbit of radius RRR around Earth. The centripetal force required for circular motion is provided by the gravitational force between the Earth and the satellite. The motion is uniform, but the velocity vector keeps changing due to the continuous change in direction.

Q1. What provides the necessary centripetal force in satellite motion?
(a) Tension
(b) Magnetic force
(c) Gravitational force
(d) Normal force

Q2. What is the direction of acceleration in uniform circular motion?
(a) Along the tangent
(b) Towards the center
(c) Away from the center
(d) Along the radius away from center

Q3. Which of the following remains constant in uniform circular motion?
(a) Velocity vector
(b) Speed
(c) Direction of motion
(d) Centripetal acceleration

Q4. If the speed of the satellite is doubled while keeping the same orbit radius, what will happen to the required centripetal force?
(a) Doubles
(b) Halves
(c) Becomes four times
(d) Remains unchanged

Answers:
Q1. (c)
Q2. (b)
Q3. (b)
Q4. (c)

We hope the given case study questions for Motion in a Plane Class 11 helps you in your learning.

👉 Motion in a Plane MCQ Questions
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Topics from which case study questions may be asked

Scalars and vectors
Projectile motion
Relative velocity
Motion in two dimensions

Projectile motion is a classic example of motion in two dimensions under constant acceleration.

For further practice on case study questions related to Motion in a Plane Class 11 Physics, we recommend exploring the link given below.

Practice More Case Study Questions on “Motion in a Plane”

Frequently Asked Questions (FAQs) on Motion in a Plane Case Study Questions

Q1: What are case study questions in Motion in a Plane?

A1: Case study questions in Motion in a Plane test your ability to apply concepts in real-life scenarios.

Q2: Are these questions asked in board exams?

A2: Yes, CBSE has started including case study/competency-based questions in final exams.

Q3: How should I prepare for case study questions?

A3: Focus on understanding concepts and practicing application-based problems.

Q4: Are answers provided for Class 11 Physics Motion in a Plane case study questions?

A4: Yes, detailed answers are provided for all questions.

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