What is the total mechanical energy of a 10g bullet if the bullet velocity at the moment of firing is 500 m / s
April 19, 2021 | education
| What is the total mechanical energy of a 10g bullet if the bullet velocity at the moment of firing is 500 m / s and the height of the gun is 1.5 m above the ground?
To calculate the total mechanical energy of the specified bullet, we will use the formula: En = Ek + Ep = m * V ^ 2/2 + m * g * h.
Variables and constants: m is the mass of the specified bullet (m = 10 g = 0.01 kg); V is the speed at the moment of the shot (V = 500 m / s); g – acceleration due to gravity (g ≈ 10 m / s2); h is the height of the gun (h = 1.5 m).
Calculation: En = m * V ^ 2/2 + m * g * h = 0.01 * 500 ^ 2/2 + 0.01 * 10 * 1.5 = 1250.15 J.
Answer: The total mechanical energy of the indicated bullet is 1250.15 J.
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