A boy with mass 50kg running at 5m/s jumps on to a 20 kg trolley travelling in the same direction at 1.5m/s. What is their common velocity?
rajenderdhiman:
Fast write answer
Answers
Answered by
0
Common velocity = (50×5 + 20×1.5)÷( 50+20)
= 4 m/s
= 4 m/s
i have written it in equational format there
i cant edit it i dont know why?
so how to post it again?
note down to your exercise book, and post it.
by picture
how to addd pictures?
i don't know exactly but there must be an option, to give ur questions by picture
ok
okk... but i am busy now. cz my exam has almost come. so i don't know when i will be able to give back ur answer
OKK
Answered by
1
Use momentum conservation.
when boy gets on trolly then this becomes one single system of mass as sum of boy and trolly.
get initial momentum and final momentum and then equalise it.
when boy gets on trolly then this becomes one single system of mass as sum of boy and trolly.
get initial momentum and final momentum and then equalise it.
Attachments:
Similar questions