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Q. A 12.0- shell is launched at an angle of 55.0 above the horizontal with an initial speed of 150. While it is 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 equal time. Suppose that air resistance can be ignored. If the heavier fragment lands back at the equal point from which the shell was launched, where will lighter fragment land and how much energy was released in the explosion?

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