+91-8076753736[email protected]
logo
logo
-->

Motion In Straight Line

Question
CBSEENPH11016992
Wired Faculty App

A body travels for half of time with velocity v1 and for next half of time with velocity v2. What is the average velocity of motion?

Solution

Let the body travel for total time to 2t.
The distance travelled by body in first t time is,
                        s subscript 1 equals straight v subscript 1 straight t
The distance travelled by body in next t time is, 
                        s subscript 2 equals straight v subscript straight v straight t
Total distance travelled by the body is, 
straight S equals s subscript 1 plus s subscript 2 equals straight v subscript 1 straight t plus straight v subscript 2 straight t therefore space A v e r a g e space v e l o c i t y space equals space fraction numerator T o t a l space d i s t a n c e space t r a v e l l e d over denominator T o t a l space t i m e space t a k e n end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space fraction numerator straight v subscript 1 straight t plus straight v subscript 2 straight t over denominator 2 t end fraction equals fraction numerator straight v subscript 1 plus straight v subscript 2 over denominator 2 end fraction

Some More Questions From Motion in Straight Line Chapter

Is absolute rest or absolute motion possible?

What is the most essential thing to study the motion of a body?

Can a body be always at rest in some frame?

Can a body be in motion in the frame associated with the body itself?

When an object in motion can be considered as particle or point object?

Can you think of physical phenomena involving the moon in which moon cannot be treated as particle?

A train is crossing the bridge. Can it be taken as a particle?

Can a train be taken a particle? Give an example in support of your answer.

 A particle is moving along curved line in space. Is the motion one dimensional?

State which of the following are examples of one, two or three dimensional motion: 

(a) A kite flying in the sky.

(b) The earth revolving around the sun. 

(c) A train moving along the equator of the earth in clockwise direction. 

(d) Accelerated motion of a particle in a straight line.

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation