A block of mass 0.50 kg is moving with a speed of 2.00 m/s on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

4 years ago


Answers : (2)


Dear vipin

doing conservation of momentum

new  v = 0.5*2/1+0.5

 = 1/1.5 =2/3

energy loss = k.e final-k.e initila

= 0.5(1.5*(0.66*0.66) - 0.5*2*2)

= -0.6666

therefore energyloss = 0.6666n-m

Please feel free to post as many doubts on our discussion forum as you can.we will get you the answer and detailed  solution very  quickly.

All the best.

Askiitians Experts
Prudhvi Teja



Now you can win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian

3 years ago

Dear Vipin,

We know that momentum should be conserved

gives 0.5*2 = (1+0.5)*v

where v i the velocity of entire mass system moving after collision...

v=(1/1.5) m/s

energy lost = kinetic energy of the system before collision - kinetic energy of the system aftr collision

                 = 1/2*0.5*22 -1/2* 1.5 *(1/1.5)2

                 =0.6667 Joules

All the best for IITJEE preparation,


With Regards,

Adapa Bharath

3 years ago

Post Your Answer

More Questions On IIT JEE Entrance Exam

Ask Experts

Have any Question? Ask Experts
Post Question
Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details
books for iit numericals
http://www.askiitians.com/important-books-iit-jee.aspx read this article all the good books are mentioned in it , it will help you to find all the good books in all three subjects.
Sher Mohammad 20 days ago
Sir my BITSAT score is 355 and in the first round of iteration I got EEE in goa ...Do I have a chance of Mech or EEE in Pilani campus in later rounds ??
First of all, congratulations for your success.You have a pretty good chance of getting both Mech (337 cutoff-2013 & 332 cutoff-2012) and EEE(343 cutoff-2013 & 343 cutoff-2012) in...
Aziz Alam 24 days ago
how to score above 100 in mathematics in jee advanced
There is no definite way to to get a particular number of marks.But there are methods through which you can gradually achieve a level of comfort which would be sufficient for you to get 100...
Aziz Alam 20 days ago
I have got 38106 category AIR. and 1474 category state rank. I have opted for ECE in NITK surathkal in my state only. Will i get nit surathkal? which of my two ranks will be considered?
The link below is IIT JEE Main Branch and College Predictor.You can use it to get the answer to your query. http://www.askiitians.com/iit-jee/main/college-branch-predictor.html Thanks...
Aziz Alam 19 days ago
air:523(SC)and overall 24875 jee mains which college for CSE branch in NITs
i suggest you to go for nit warangal,trichy,surathkal.they all are equally good and you wont regret your choice. if not there then go for nit delhi. other than nits i suggest you to do for...
SAURAV RAI 13 days ago
View all Questions »