Question

2 nd part.......

ans thoda ajib hai par..​

Answer 1

work done is spring =1/2kx² hota h

simple equation likh kar solve karo .

enlogate hoga to wo KE attend karega .. to usme extension aayega to ..

formula hoga

1/2mv² = 1/2k(x+y)²

Answer 2

you're a DIRECTIONER since when???