A projectile is fired from a gun at an angle of \( 45^{\circ} \) wi...

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A projectile is fired from a gun at an angle of \( 45^{\circ} \) with the horizontal and with a speed of \( 20 \mathrm{~m} / \mathrm{s} \) relative to ground. At the highest point in its flight the projectile explodes into two fragments of equal mass. One
\( \mathrm{P} \) fragment comes at rest just after explosion. How far from the gun does the other fragment land, assuming a horizontal ground? and also find its speed just after explosion. Take \( \mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2} \)
\( \mathrm{W} \)
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