Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

Home / Doubts and Solutions/CBSE/Class 9/Physics

u

Asked by ayushikas 12th March 2010, 2:36 PM
Answered by Expert
Answer:

Acceleration = a = F/m = 20/5 = 4 m/s2.

Initial velocity = u = 0.

Time = t = 10 sec.

Displacement = S = ut + (1/2)at2 =  (1/2)(4)(100) = 200 m.

Work done = ForcexDisplacement = (20)(200) = 4000 J.

Work done = Kinetic energy = 4000 J = 4 kJ.

Regards,

Team,

TopperLearning.

Answered by Expert 13th March 2010, 4:05 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Previous Question
Next Question
Your answer has been posted successfully!

Free related questions

A ship floats with 1/3 of its volume outside water. What is the  relative density of ship. 
15th February 2016, 11:14 AM
 sir
    can you explain me kinetic eneergy formula derivation
15th February 2016, 3:12 PM
A body vibrating with a time period of 2 milliseconds produces a wave travelling in a medium with a velocity of 1250 m/s. What is the wavelength.
16th February 2016, 6:54 PM
Compare speed of sound in air and water.
17th February 2016, 8:07 AM
A vehicle is moving with a velocity of 2m/s and can be stopped over 2m. What distance will it cover before coming to rest if its kinetic energy is doubled ?
18th February 2016, 7:11 PM
RELATED STUDY RESOURCES :
CBSE Class-9 QUESTION ANSWERS

Browse free questions and answers by Chapters

Trending Tags

motion in one dimension quadratic equation linear equations chemical reactions differentiability and chain rule mole concept and molar mass tips and tricks quadratic equations density acceleration

Latest Questions

JEE JEE (Main) Chemistry
Asked by Prachijnv2016 25th June 2018, 1:14 AM
CBSE IX Physics
velocity time graph for ghatkopar
Asked by gaurivanita0419 24th June 2018, 10:48 PM
ICSE X Grammar
Write an original story beginning with," take care of the pence and the pounds will take care of themselves". 
Asked by bastion.abenezer 24th June 2018, 10:13 PM

Chat with us on WhatsApp