Question
I do not understand why my answers are wrong.
My 1st answer 0.471 is wrong.
The second on the sscreen shot too.
A vessel at rest at the origin of an xy coordinate system, explodes into three pieces. Just after the explosion, one piece, of mass m, moves with velocity v in the negative x direction, and a second piece, also of mass m, moves with velocity the same velocity in the negative y direction. The third piece has mass 3m. Just after the explosion, what are the magnitude and direction of the velocity of the third piece? (Use any variable or symbol stated above as necessary.)
Explanation / Answer
your ans is correct
the velocity will be v/3 i +v/3 j
but magnitude will be =sqrt(2)*v/3