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
Question 2
A 2.0-kg object moving 3.0 m/s strikes a 1.0-kg object initially at rest. Immediately after the collision, the 2.0-kg object has a velocity of 1.5 m/s directed 30 from its initial direction of motion. What is the y component of the velocity of the 1.0-kg object just after the collision?
a. -3.7 m/s
b. -3.4 m/s
c. -1.5 m/s
d. -2.4 m/s
e. -4.1 m/s
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