Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back

clear
Finding exercises tough? Install LearnNext+ app to watch our videos and get a crystal clear understanding of concepts Install Now X
X

Install the app to watch our videos and get a crystal clear understanding of concepts

Install Now
searchtune

Ashmit Sinha

May 18, 2015



Manoharan V

Jun 28, 2015



Mohammed

May 21, 2014



Dazzler

Jan 12, 2014

Please ans its urgent



i did not understand

Somnath

Jun 4, 2014



1.666km/h

Tanvi Sharma

Sep 8, 2014



Letusknowwhy

Mar 28, 2014

Which of the following is true for displacement?(a) It cannot be zero.(b) Its magnitude is greater than the distance travelled by the object.



As we know displacement is the shortest distance between the initial and final positions
(a) is not true.  Displacement can be zero.
The body may be at rest, there...

Izaan Ali

May 19, 2015

Define retardation.



Retardation is a negative acceleration of a body. The velocity of the body may either increase or decrease. The change in velocity is known as acceleration. The dcrease in accelera...

Letusknowwhy

Mar 28, 2014

What does the odometer of an automobile measure?



The odometer measures the distance travelled by the automobile. Generally it presents at just below the speedometer.

Kirubes 2001

Jun 28, 2014

On a 120 km track, a train travels the first 30 km at a uniform speed of 30 km/h. How fast must the train travel the next 90 km so as to average 60 km/h for the entire trip ?



Speed of the train in the first 30 km, v1 = 30 km/h
Speed of the train in the next 90 km, v2 (to be determined)
Average speed = 60 km/h = (v1 + v2)/2...

Ashmit Sinha

May 18, 2015



Manoharan V

Jun 28, 2015



Mohammed

May 21, 2014



Dazzler

Jan 12, 2014

Please ans its urgent



i did not understand

Somnath

Jun 4, 2014



1.666km/h

Tanvi Sharma

Sep 8, 2014



Letusknowwhy

Mar 28, 2014

Which of the following is true for displacement?(a) It cannot be zero.(b) Its magnitude is greater than the distance travelled by the object.



As we know displacement is the shortest distance between the initial and final positions
(a) is not true.  Displacement can be zero.
The body may be at rest, there...

Izaan Ali

May 19, 2015

Define retardation.



Retardation is a negative acceleration of a body. The velocity of the body may either increase or decrease. The change in velocity is known as acceleration. The dcrease in accelera...

Letusknowwhy

Mar 28, 2014

What does the odometer of an automobile measure?



The odometer measures the distance travelled by the automobile. Generally it presents at just below the speedometer.

Kirubes 2001

Jun 28, 2014