English

Find the Kinetic Energy of a Body of Mass 1 Kg Moving with a Uniform Velocity of 10 M S-1. - Physics

Advertisements
Advertisements

Question

Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.

Solution

Mass, m = 1kg
Velocity, v = 10m/s
Kinetic energy = 1/2 ×๐‘š๐‘Ž๐‘ ๐‘  ×(๐‘ฃ๐‘’๐‘™๐‘œ๐‘๐‘–๐‘ก๐‘ฆ)2
= 1/2 ×1 ×(10)2= 1/2 ×1 ×100
= 50J

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Work, Energy and Power - Exercise 2 (B) 3 [Page 42]

APPEARS IN

Selina Physics [English] Class 10 ICSE
Chapter 2 Work, Energy and Power
Exercise 2 (B) 3 | Q 10 | Page 42

RELATED QUESTIONS

When do we say that work is done?


Name a common device where a gear train is used


When does a force perform work?


Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.


It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the Work done.


A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:

The loss in potential energy of the body, 


A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)


Choose one or more correct alternatives.

For work to be performed, energy must be ______.

  1. transferred from one place to another
  2. concentrated
  3. transformed from one type to another
  4. destroyed

What do you mean by the term 'work'?

When you move upstairs, do you perform some work?


What is the work done on a body by the gravitational force towards the centre of the path acting when it moves along a circular path?

What is the work done on the earth by the gravitational force of the sun during its motion around the sun?

On what factors does the work done by a force depend?


A moving object of mass 30 kg has 60 J of kinetic energy. What is its speed?

Is P.E. a vector or a scalar quantity?

A body does 20 J of work in 10 s. What is its power?


A bullet is of mass 'm' g and is moving with a velocity 'v' m/s. Find the kinetic energy of the bullet when
(a) The mass is doubled,
(b) The velocity is tripled.


Name the material commonly used for the manufacturing of solar cells.


Who is the odd one out?


Share
Notifications

Englishเคนเคฟเค‚เคฆเฅ€เคฎเคฐเคพเค เฅ€


      Forgot password?
Use app×