PHYSICS PROBLEM: Please provide a detailed solution. Please only solve if you fu
ID: 2039888 • Letter: P
Question
PHYSICS PROBLEM: Please provide a detailed solution. Please only solve if you fully understand what the question is asking.
In a Fourth of July celebration, a ?recracker is launched from ground level with an initial velocity of 28.1 m/s at 32.6? from the vertical. At its maximum height it explodes in a star-burst into many fragments, two of which travel forward initially at 23.8 m/s at ±50.8? with respect to the horizontal, both quantities measured relative to the original ?recracker just before it exploded. With what angles with respect to the horizontal do the two fragments initially move right after the explosion, as measured by a spectator standing on the ground?
Explanation / Answer
Just before explosion, At maximum height; the velocity of projectile is only along horizontal.
As per question, fragments are also moving horizontally.
Hence for observer on ground, the initial angles will be same as the angles relative to original firecracker.
And : +50.8 degree & -50.8 degree
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