15. A 6.0-kg object, initially at rest in free space, “explodes" into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. How much kinetic energy is released in this explosion? (a) 2.4 kJ (b) 2.9 kJ (c) 2.0 kJ (d) 3.4 kJ (e) 1.2 kJ

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  1. A 6.0-kg object, initially at rest in free space, “explodes” into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. How much kinetic energy is released in this explosion?

15.
A 6.0-kg object, initially at rest in free space, “explodes" into three segments of equal mass.
Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of
60° between their directions of motion. How much kinetic energy is released in this explosion?
(a) 2.4 kJ
(b) 2.9 kJ
(c) 2.0 kJ
(d) 3.4 kJ
(e) 1.2 kJ
Transcribed Image Text:15. A 6.0-kg object, initially at rest in free space, “explodes" into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. How much kinetic energy is released in this explosion? (a) 2.4 kJ (b) 2.9 kJ (c) 2.0 kJ (d) 3.4 kJ (e) 1.2 kJ
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