011-40705070  or  
Call me
Download our Mobile App
Select Board & Class
  • Select Board
  • Select Class
 

What happens to the kinetic energy when

i ) The mass of the body is doubled at constant velocity

ii ) The velocity of the body is doubled at constant velocity

iii ) The mass of the body is doubled but the velocity is reduced to

half.

Asked by mritunjai.tomar...(student) , on 19/3/12


Become Expert
Score more in Science
Start Now with Video Lessons, Sample Papers, Revision Notes & more for Class-IX - CBSE 

EK = 1/2 m * v2

i) when mass is doubled with the velocity constant then K. E. = 1/2 (2m) * v2

=> 2 { 1/2 m * v2}

=> the kinetic energy would be doubled.

ii) I cant understand it as u are increasing the velocity and saying it constant. 

If, the v is doubled ith the mass constant, then the Kinetic Energy would become 4 times.

iii) if the mass is doubked and velocity halved, then the kinetic energy would be Halved

Hope the answer is right.

Posted by Akarsh Anupam(student)

More Answers

please kindly check if the (ii) question is right or wrong.....

thank you

Posted by Lochana(student)

Ask a QuestionHave a doubt? Ask our expert and get quick answers.
Show me more questions

close