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Selina solutions for Concise Physics Class 7 ICSE chapter 2 - Motion [Latest edition]

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Chapter 2: Motion

Objective QuestionsShort/Long Answer QuestionsNumericals

Selina solutions for Concise Physics Class 7 ICSE Chapter 2 Motion Exercise Objective Questions

Objective Questions | Q 1.1

Write true or false of the following statement.

Two trains going in opposite directions with the same speed are at rest relative to each other.

• True

• False

Objective Questions | Q 1.2

Write true or false of the following statement.

A ball is thrown vertically upwards. Its motion is uniform throughout.

• True

• False

Objective Questions | Q 1.3

Write true or false of the following statement.

The motion of a train starting from one station and reaching at another station is non-uniform.

• True

• False

Objective Questions | Q 1.4

Write true or false of the following statement.

A motion which repeats itself after a fixed interval of time is called periodic motion.

• True

• False

Objective Questions | Q 1.5

Write true or false of the following statement.

A ball thrown by a boy from a roof-top has oscillatory motion.

• True

• False

Objective Questions | Q 1.6

Write true or false of the following statement.

Mass has both magnitude and direction.

• True

• False

Objective Questions | Q 1.7

Write true or false of the following statement.

Weight always acts vertically downwards.

• True

• False

Objective Questions | Q 1.8

Write true or false of the following statement.

Mass varies from place to place but weight does not.

• True

• False

Objective Questions | Q 2.1

Fill in the blank:

Two boys cycling on the road with the same speed are _______ relative to each other.

Objective Questions | Q 2.2

Fill in the blank :

The motion in a ________ is rectilinear motion.

Objective Questions | Q 2.3

Fill in the blank:

One to and fro motion of a clock pendulum takes time = ________

Objective Questions | Q 2.4

Fill in the blank:

36 km h-1 = ______

Objective Questions | Q 2.5

Fill in the blank:

Total distance travelled = _______ × total time taken.

Objective Questions | Q 2.6

Fill in the blank:

The weight of a girl is 36 kgf. Her mass will be _______

Objective Questions | Q 2.7

Fill in the blank:

The weight of a body is measured using a _______

Objective Questions | Q 3

Match the following:

 Column A Column B (a) Circular motion (1) a running fan (b) periodic motion (2) a car moving in a market (c) Vibratory motion (3) revolution of earth around the sun (d) Rotatory motion (4) motion of wire of a guitar (e) Non uniform motion (5) motion of pendulum of a clock
Objective Questions | Q 4.1

Select the correct alternative:

A book lying on a table is an example of

• a body at rest

• a body in motion

• a body neither at rest nor in motion

• none of these

Objective Questions | Q 4.2

Select the correct alternative

The motion of a pendulum is

• rotatory

• oscillatory

• curvilinear

• rectilinear

Objective Questions | Q 4.3

Select the correct alternative

A car moving on a straight road is an example of

• rotatory motion

• rectilinear motion

• oscillatory motion

• periodic motion

Objective Questions | Q 4.4

Select the correct alternative

A ball falls down vertically. Its motion is

• periodic

• linear

• circular

• vibratory

Objective Questions | Q 4.5

Select the correct alternative

If a body covers equal distance in equal interval of time, the motion is said to be

• uniform

• non-uniform

• oscillatory

• rotatory

Objective Questions | Q 4.6

Select the correct alternative

A boy goes from his house to school by bus at a speed of 20 km h_1 and returns back through the same route at a speed of 30 km h_1. The average speed of his journey is.

• 24kmh1

•  25 km h1

•  30 km h1

•  20 km h1

Objective Questions | Q 4.7

Select the correct alternative

The earth attracts a body of mass 1 kg with a force of 10 N. The mass of a boy is 50 kg. His weight will be

• 50 kg

• 500 N

•  50 N

• 5 N

Selina solutions for Concise Physics Class 7 ICSE Chapter 2 Motion Exercise Short/Long Answer Questions

Short/Long Answer Questions | Q 1

Explain the meaning of the terms rest and motion.

Short/Long Answer Questions | Q 2

Comment on the statement ‘rest and motion are relative terms’. Give an example.

Short/Long Answer Questions | Q 3.1

Fill in the blank using one of the word: at rest, in motion.

A person walking in a compartment of a stationary train is relative to the compartment and is relative to the platform.

Short/Long Answer Questions | Q 3.2

Fill in the blank using one of the word : at rest, in motion.

A person sitting in a compartment of a moving train is relative to the other person sitting by his side and is relative to the platform.

Short/Long Answer Questions | Q 4

Name five different types of motion you know.

Short/Long Answer Questions | Q 5

What do you mean by translatory motion ? Give one example.

Short/Long Answer Questions | Q 6.1

Explain the meanings of rectilinear motion and Give one example.

Short/Long Answer Questions | Q 6.2

Explain the meanings of curvilinear motion and Give one example.

Short/Long Answer Questions | Q 7

What is rotatory motion ? Give two examples.

Short/Long Answer Questions | Q 8

What is meant by circular motion ? Give one example.

Short/Long Answer Questions | Q 9

How does a rotatory motion differ from the circular motion?

Short/Long Answer Questions | Q 10

Explain oscillatory motion by giving one example.

Short/Long Answer Questions | Q 11

What is vibratory motion ? Give one example.

Short/Long Answer Questions | Q 12

Differentiate between periodic and non-periodic motions by giving an example of each.

Short/Long Answer Questions | Q 13

What is random motion. Give one example.

Short/Long Answer Questions | Q 14.1

Name the type  of motion being performed by Vehicle on a straight road.

Short/Long Answer Questions | Q 14.2

Name the type of motion being performed by Blades of an electric fan in motion.

Short/Long Answer Questions | Q 14.3

Name the type of motion being performed by Pendulum of a wall clock.

Short/Long Answer Questions | Q 14.4

Name the type of motion being performed by Smoke particles from chimney.

Short/Long Answer Questions | Q 14.5

Name the type of motion being performed by Hands of a clock.

Short/Long Answer Questions | Q 14.6

Name the type of motion being performed by Earth around the sun.

Short/Long Answer Questions | Q 14.7

Name the type of motion being performed by A spinning top.

Short/Long Answer Questions | Q 15

Give two examples to illustrate that a body can have two or more types of motion simultaneously.

Short/Long Answer Questions | Q 16.1

State the types of motion of the needle of a sewing machine?

Short/Long Answer Questions | Q 16.2

State the types of motion of the wheel of a bicycle ?

Short/Long Answer Questions | Q 16.3

State the types of motion of the drill machine?

Short/Long Answer Questions | Q 16.4

State the types of motion of the carpenter’s saw?

Short/Long Answer Questions | Q 17

Distinguish between uniform and non-uniform motions, giving an example of each.

Short/Long Answer Questions | Q 18

How do you determine the average speed of a body in non-uniform motion ?

Short/Long Answer Questions | Q 19

Define the term weight and state its S.I. unit.

Short/Long Answer Questions | Q 20

How are the units of weight, kgf and newton related ?

Short/Long Answer Questions | Q 21

State three differences between mass and weight.

Short/Long Answer Questions | Q 22

Which quantity : mass or weight, does not change by change of place ?

Short/Long Answer Questions | Q 23

State which of the quantities, mass or weight is always directed vertically downwards.

Selina solutions for Concise Physics Class 7 ICSE Chapter 2 Motion Exercise Numericals

Numericals | Q 1

A car covers a distance of 160 km between two cities in 4 h. What is the average speed of the car ?

Numericals | Q 2

A train travels a distance of 300 km with an average speed of 60 km h_1. How much time does it take to cover the distance?

Numericals | Q 3

A boy travels with an average speed of 10 m s-1 for 20 min. How much distance does he travel?

Numericals | Q 4

A boy walks a distance 30 m in 1 minute and another 30 m in 1.5 minute. Describe the type of motion of the boy and find his average speed in m s-1.

Numericals | Q 5

A cyclist travels a distance of 1 km in the first hour, 0.5 km in the second hour and 0.3 km in the third hour. Find the average speed of the cyclist in (1) km h-1, (2) m s-1.

Numericals | Q 6

A car travels with speed 30 km h-1 for 30 minute and then with speed 40 km h-1 for one hour.

Find :
(a) the total distance travelled by the car
(b) the total time of travel, and
(c) the average speed of car

Numericals | Q 7

On earth the weight of a body of mass 1.0 kg is 10 N. What will be the weight of a boy of mass 37 kg in (a) kgf (b) N ?

Numericals | Q 8

The weight of a body of mass 6.0 kg on moon is 10 N. If a boy of mass 30 kg goes from earth to the moon surface, what will be his (a) mass, (b) weight ?

Chapter 2: Motion

Objective QuestionsShort/Long Answer QuestionsNumericals

Selina solutions for Concise Physics Class 7 ICSE chapter 2 - Motion

Selina solutions for Concise Physics Class 7 ICSE chapter 2 (Motion) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Physics Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Physics Class 7 ICSE chapter 2 Motion are Motion as a Change in Position of an Object with Respect to Time, Types of Motion - Translatory, Types of Motion - Circulatory, Types of Motion - Oscillatory, Types of Motion - Repetitive (Periodic and Non Periodic), Types of Motion - Random, Uniform and Non Uniform Motion: Concept of Distance and Speed (Average Speed), Weight - Concept, Differences Between Mass and Weight, Concept of Force and Pressure: Motion.

Using Selina Class 7 solutions Motion exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

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