NCERT  //  Science  //  Ch.7

Motion
MCQ_MASTER_SERIES

Distance · Displacement · Speed · Velocity · Acceleration · Equations of Motion

[ 50 QST ]
[ 32 min ]
[ 3 TIERS ]
[ 5 TOPICS ]
⚡ INIT_QUIZ // ANALYTICS
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Question Intelligence

Quiz Analytics

A data-driven breakdown of all 50 questions by difficulty, exam origin and topic distribution.

📈 Distribution Overview

50
Total Questions
CBSE Board
24
State Board
16
Olympiad Level
10

🗂 Topic Coverage

Distance & Displacement
18%
Speed & Velocity
20%
Acceleration
18%
Equations of Motion
26%
Graphical Representation
18%
24
CBSE Board
16
State Board
10
Olympiad Level
Conceptual Framework

Key Concept Highlights

6 foundational pillars that power every question in this quiz. Understand these, and the answers follow naturally.

📍
Distance & Displacement
Distance: scalar, total path length. Displacement: vector, shortest path from initial to final position. Displacement can be zero even if distance is non-zero (circular motion).
🏃
Speed & Velocity
Speed = distance/time (scalar). Velocity = displacement/time (vector). Uniform speed ≠ uniform velocity (direction may change). Average speed = total distance/total time.
📈
Acceleration
Rate of change of velocity = (v−u)/t. Vector quantity. Uniform acceleration: equal velocity change in equal time intervals. Negative acceleration = deceleration/retardation.
📐
Equations of Motion
Three kinematic equations for uniform acceleration. v = u + at. s = ut + ½at². v² = u² + 2as. All three derived graphically from velocity-time graph.
📊
Motion Graphs
Distance-time graph: slope = speed (straight line = uniform, curve = non-uniform). Velocity-time graph: slope = acceleration, area under graph = displacement.
🔄
Uniform Circular Motion
Speed is constant but velocity changes (direction changes). Acceleration is centripetal (towards centre). Not uniform motion despite constant speed. Examples: clock hands, satellites.
Pedagogical Value

Why MCQs Matter

Multiple-choice questions are not mere guessing games — they are the sharpest diagnostic tool available to a competitive exam aspirant.

~14%

of CBSE Class IX Science — most numerical-dense Physics chapter at Class IX level

Quick Reference

Important Formula Capsules

5 must-memorise equations that surface repeatedly across CBSE and JEE papers.

First Equation
\[ v = u + at \]
Second Equation
\[ s = ut + \dfrac{1}{2}at^2 \]
Third Equation
\[ v^2 = u^2 + 2as \]
Average Speed
\[ \bar{v} = \dfrac{\text{total distance}}{\text{total time}} \]
Acceleration
\[ a = \dfrac{v - u}{t} \]
Learning Outcomes

What You Will Learn

By completing this quiz set you will have exercised all the following competencies.

01 Distinguish distance from displacement and speed from velocity with examples
02 Calculate average speed and average velocity for a given journey
03 Define acceleration and distinguish between uniform and non-uniform acceleration
04 Derive the three equations of motion graphically
05 Interpret distance-time and velocity-time graphs (slope, area, shape meaning)
06 Explain why uniform circular motion is accelerated motion despite constant speed
Exam Preparation

Strategy & Preparation Tips

4 evidence-based strategies to maximise your score in CBSE Boards and JEE.

Step 01
Three Equations on One Card
v=u+at (no s), s=ut+½at² (no v), v²=u²+2as (no t). The missing quantity tells you which equation to use — this insight alone saves 2 minutes per numerical.
Step 02
Graph Interpretation Drill
CBSE gives 2 marks for "what does the area under v-t graph represent?" Answer: displacement. "What does slope of d-t graph give?" Answer: speed. Memorise 4 such graph facts.
Step 03
Sign Convention for Direction
Take the direction of motion as positive. Deceleration then means a is negative. Write u, v, a, s with signs before substituting — prevents 80% of sign errors.
Step 04
Circular Motion Exception
CBSE trick: "Is uniform circular motion — uniform or non-uniform motion?" Answer: non-uniform (velocity direction changes). Do not confuse with uniform speed.

Ready to Test Your Mastery?

50 questions  ·  Elapsed timer  ·  Instant scored results

⚡ Begin Motion Quiz
🎯 Knowledge Check

Science — Motion

50 Questions Class 9 MCQs
1
Which of the following is a balanced force?
2
Newton’s First Law of Motion is also called:
3
An object continues in its state of rest or uniform motion unless acted upon by an external force. This is:
4
Inertia of motion means:
5
The unit of force is:
6
Which of these is an example of Newton’s First Law?
7
Momentum is defined as:
8
SI unit of momentum is:
9
Rate of change of momentum is equal to:
10
Newton’s Second Law of Motion gives:
11
Which one is an example of Newton’s Third Law?
12
Newton’s Third Law states:
13
The recoil of a gun is an example of:
14
A ball hitting a bat and bat pushing the ball is an example of:
15
The property of an object to resist change in its state is called:
16
A passenger falls backward when a bus suddenly accelerates. This is due to:
17
The SI unit of force is named after:
18
Momentum is a:
19
When two bodies collide, total momentum is conserved if:
20
Law of conservation of momentum states:
21
Which of the following shows inertia of direction?
22
A cricketer lowers his hands while catching a ball to:
23
A body of mass 5 kg has momentum 25 kg·m/s. Its velocity is:
24
A body of mass 10 kg is moving with velocity 2 m/s. Its momentum is:
25
A force of 50 N is applied on a body of mass 10 kg. The acceleration produced is:
26
Which of the following is not an example of Newton’s Third Law?
27
A rocket works on the principle of:
28
Which law defines force quantitatively?
29
The SI unit of force is equivalent to:
30
A person jumping from a boat pushes the boat backward. This is due to:
31
Which of the following has maximum inertia?
32
Which physical quantity determines the impact produced by a moving body?
33
A body continues to move uniformly unless:
34
The product of force and time is called:
35
The unit of impulse is:
36
Which law explains why we wear seat belts in cars?
37
A man pushing a wall experiences a reaction force. The wall does not move because:
38
Which of these is not a contact force?
39
When a carpet is beaten, dust particles come out due to:
40
The acceleration produced in a body depends on:
41
A bullet of mass 50 g moving with velocity 100 m/s has momentum:
42
A force of 20 N acts on a mass of 2 kg. The acceleration is:
43
Walking is possible because of:
44
Which law explains rocket propulsion?
45
The rate of change of velocity is called:
46
The inertia of an object depends on:
47
An object at rest can be moved by:
48
When a horse pulls a cart, the cart moves because:
49
Which is an example of conservation of momentum?
50
Which of the following quantities remains constant in an isolated system of colliding bodies?
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ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
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🎓 Class 9 📐 Science 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
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Frequently Asked Questions

Motion in which an object travels equal distances in equal intervals of time is uniform motion.

Motion in which an object covers unequal distances in equal intervals of time is non-uniform motion.

Acceleration is the rate of change of velocity with respect to time.

a = (v - u) / t, where v is final velocity, u is initial velocity, and t is time.

Metre per second squared (m/s²).

When velocity changes equally in equal intervals of time, it is uniform acceleration.

When velocity changes by unequal amounts in equal intervals of time, it is non-uniform acceleration.

Retardation or deceleration is negative acceleration when velocity decreases.

It represents speed (rate of change of distance with time).

It represents acceleration.

Average velocity = Total displacement / Total time taken.

It shows the change in velocity of the object.

Motion is studied using concepts like distance, displacement, speed, velocity, acceleration, and time graphs.

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    ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
    Sharing this chapter
    Motion | Science Class 9 | Academia Aeternum
    Motion | Science Class 9 | Academia Aeternum — Complete Notes & Solutions · academia-aeternum.com
    🎓 Class 9 📐 Science 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
    Share on
    WhatsApp
    Telegram
    X / Twitter
    Facebook
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    Threads
    Pinterest
    LinkedIn
    Quora
    Discord
    Reddit
    Email
    academia-aeternum.com/class-9/science/motion/mcqs/ Copy link
    💡
    Exam tip: Sharing chapter notes with your study group creates a reinforcement loop. Teaching a concept is the fastest path to mastering it.

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