A bullet of mass 10 g has its kinetic energy equal to 200 J. Find the speed of the bullet.
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Answer:
Explanation:
mass = 10g
= 0.01kg
KE = 200J
KE = 1/2mv²
200 = 1/2 0.01 v²
2×200= 0.01v²
400/0.01 = v²
v²=√40000
v =200
∴ speed = 200m/s
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