Zigya Logo

Chapter Chosen

Motion in A Plane

Book Chosen

Physics Part I

Subject Chosen

Physics

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 s is s1 and that covered in the first 20 s is s2, then

  • s2 = 2s1

  • s2 = 3s1

  • s2 = 4 s1

  • s2 = s1


C.

s2 = 4 s1

If the particle is moving in a straight line under the action of a constant force then distance covered s = ut + at2 /2
since the body start from rest u = 0

therefore, s = at2/2

Now,

straight s subscript 1 space equals 1 half straight a left parenthesis 10 right parenthesis squared space space space space.... space left parenthesis straight i right parenthesis
and space
straight s subscript 2 space equals space 1 half space straight a space left parenthesis 20 right parenthesis squared space.... space left parenthesis ii right parenthesis
Dividing space eq space left parenthesis straight i right parenthesis space and space eq space left parenthesis ii right parenthesis comma space we space get

straight s subscript 1 over straight s subscript 2 space equals space fraction numerator left parenthesis 10 right parenthesis squared over denominator left parenthesis 20 right parenthesis squared end fraction

straight s subscript 2 space equals space 4 straight s subscript 1


If the particle is moving in a straight line under the action of a constant force then distance covered s = ut + at2 /2
since the body start from rest u = 0

therefore, s = at2/2

Now,

straight s subscript 1 space equals 1 half straight a left parenthesis 10 right parenthesis squared space space space space.... space left parenthesis straight i right parenthesis
and space
straight s subscript 2 space equals space 1 half space straight a space left parenthesis 20 right parenthesis squared space.... space left parenthesis ii right parenthesis
Dividing space eq space left parenthesis straight i right parenthesis space and space eq space left parenthesis ii right parenthesis comma space we space get

straight s subscript 1 over straight s subscript 2 space equals space fraction numerator left parenthesis 10 right parenthesis squared over denominator left parenthesis 20 right parenthesis squared end fraction

straight s subscript 2 space equals space 4 straight s subscript 1


1104 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


814 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

Give three examples of scalar quantities.

Mass, temperature and energy
769 Views

1.png
curious learner
Do a good deed today
Refer a friend to Zigya