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A 12.0 kg shell is launched at an angle of 55.0∘ above the horizontal with an initial speed of 150 m/s. At its highest point, the shell exploded into two fragments, one three times heavier than the other. The two fragments reach the ground at the same time. Ignore air resistance


a. If the heavier fragment lands back at the same point from which the shell was launched, where will the lighter fragment land?
b. How much energy was released in the explosion?

Sagot :

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