1.

A radioactive particle at rest, having mass 10g, breaks into 2 fragments (1&2) in the mass ratio 2:3 respectively. If the first one moves with a velocity of 10m/s what will be the speed of the second particle?

A. 4.33 m/s
B. -4.33 m/s
C. -6.67 m/s
D. 6.67 m/s
Answer» D. 6.67 m/s


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