A particle of mass `m` has a velocity `-v_(0) i`, while a second particle of same mass has a velocity `v_(0) j`. After the particles collide, first particle is found to have a velocity `(-1)/(2) v_(0) overline i` then the velocity of othe particle is

Options

A. `(-1)/(2) v_(0) vec i+ v_(0) vec j`
B. `(1)/(2) v_(0) vec i+ v_(0) vec j`
C. `v_(0) vec i+ v_(0) vec j`
D. `-v_(0) vec i+ v_(0) vec j`

Answer

A

Explanation

`{:(("Total momentum",,,,),("before collision",,,,)):}={:(("Total momentum",,,,),("after collision",,,,)):}`.