Bullet weight 10 grams How fast you need to move so that its kinetic energy was equal to 3200.
| August 5, 2021 | education
Task data: m (mass of a given bullet) = 10 g (in SI m = 10 * 10 ^ -3 kg); Ek (required kinetic energy) = 3200 J.
We express the speed at which a given bullet must move from the formula: Ek = m * V ^ 2/2, whence V = √ (2 * Ek / m).
Let’s calculate: V = √ (2 * 3200 / (10 * 10 ^ -3)) = 800 m / s.
Answer: A given bullet needs to move at a speed of 800 m / s.
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