Wellcome!

 

 

Asked/Added Questions From NCERT:


Answer:

Master Purushottam

  (a) Not true, because if the initial and final position of the object is the same displacement can become zero.

 
(b) Not true, because, displacement is the shortest measurable distance between the initial and final positions of an object. It cannot be greater than the magnitude of the distance travelled by an object, but it can be smaller than the magnitude of the distance travelled by an object or , it may be equal to the distance travelled by the object.

-Answered by Master Purushottam On 24 August 2019:12:11:30 AM


Question 2. Asked on :15 January 2019:06:04:35 PM

 A man walks around a square street of side 10 m in 40 sec. Calculate the displacement of the man at the end of 2 minutes 20 seconds.

-Added by Himanshi Verma Science » Motion

Answer:

Master Purushottam

 The man takes 40 sec to cover ( 4 * 10 ) 40 metres. This shows he covers one metre in one sec.

In 2 min 20 sec (140 sec) , he will cover a distance of  140 metres.

Thus he completes  14040 = 3.5 rounds in 2 min 20 sec.

Hence it is noticed that he will be at the opposite side from where he started.

Now considering two simple cases.

Case (i)

If the man started at a corner of the square street:

In this case, the man would be diagonally opposite to the place from where he started

Displacement = diagonal of square with side 10 metre.

=   102+102

=   100

=14.1m

Case (ii)

The man started from the middle of the road.

After the end time, he is in the opposite side of the road.

Hence, the displacement is 10 metre.

-Answered by Master Purushottam On 24 August 2019:12:11:55 AM


Question 3. Asked on :07 January 2019:12:54:06 AM

 What is retardation?

-Added by ATP Admin Science » Motion

Answer:

Akki chauhan

    Negative acceleration is called retardation.

-Answered by Akki chauhan On 10 January 2019:10:56:09 AM


 

You can see here all the solutions of this question by various user for NCERT Solutions. We hope this try will help you in your study and performance.

This Solution may be usefull for your practice and CBSE Exams or All label exams of secondory examination. These solutions or answers are user based solution which may be or not may be by expert but you have to use this at your own understanding of your syllabus.

 

 

What do you have in your Mind....

Ask Your Question? From your text book.

Our Expert Team reply with answer soon.

 

Ask Your Question

 

* Now You can earn points on every asked question and Answer by you. This points make you a valuable user on this forum. This facility is only available for registered user and educators.

Next moment you answer is ready .... go ahead ...

 

 

 

Search your Question Or Keywords

 

 

Do you have a question to ask?

 

Ask Your Question

User Earned Point: Select

 

 

 

All Tags by Subjects:

 

Science (1310)
History (166)
Geography (143)
Economics (121)
Political Science (48)
Mathematics (145)
General Knowledge (3128)
Biology (69)
Physical Education (12)
Chemistry (25)
Civics (17)
Home Science (10)
Sociology (8)
Hindi (8)
English (145)
Physics (20)
Other (32)
Accountancy (11)
Business Study (16)
Computer Science (6)

 

 

Sponsers link