Abody initially moving at 0.500c with respect to a stationary observer disintegrates into two fragments that move in opposite directions relative to the centre of mass along the same line of motion as the original body. after disintegration, one fragment has a velocity of 0.600c in the backward direction in the centre of mass frame and the other has a velocity of 0.500c in the forward direction. what velocities will the observer measure for the two fragments?

0.846 c, 0

Explanation:

Giving

Body is initially moving with 0.5 c

The velocity of the fragment which is moving with velocity of 0.6  c is appears to be move with velocity of

And the velocity of particle moving in opposite direction with velocity 0.5 c

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

answer: 31, 5556. 952 seconds