Question

a bomb is kept stationary at a point it suddenly explodes into two fragments of mass 1 gram and 3 grand. total kinetic energy of the fragment is 6.4 * 10^4j. what is the kinetic energy of the smaller fragment.

Solve properly.
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Answer 1

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Answer 2

✌♥✌hey mate here is your answer ✌♥✌

⛄total kinetic energy=6.4×10⁴j♥

⛄kinetic energy of smaller fragment=♥

⛄ 1/2 ×1×10^-3×v1²♥

⛄and that of bigger fragment=♥

⛄ 1/2 ×3×10^-3×v2²♥

⛄the velocity and momentum will be opposite to each other♥

⛄so 1×10^-3×v1=3×10^-3×v2♥

⛄ v1=3v2♥

⛄so♥

⛄ 1/2 ×1×10^-3×v1²+1/2 ×3×10^-3×v2²=6.4×10⁴

⛄1/2 ×1×10^-3×9v2²+1/2 ×3×10^-3×v2²=6.4×10⁴

⛄1/2×10^-3(12v2²)=6.4×10⁴♥

⛄v2²=64/6 ×10^6♥

⛄so v1²=9×64/6 ×10^6♥

⛄ =96×10^6♥

⛄ v1=4√6×10³m/s♥

⛄so♥

⛄kinetic energy of smaller fragment=♥

⛄ 1/2 ×1×10^-3×v1²♥

⛄=1/2 ×10^-3×96×106♥

⛄=4.8×10⁴joules♥

⛄hope it will help you ♥

✌♥✌mark me brainliest ✌ ♥✌