Question

какова средняя скорость винтовки если привыстреле из винтовки массой 3 кг подвешенной на нитях,горизонтально вылетает пуля массой 10кг со скоростью 700м/с

Answer 1

пуля массой 10кг -бред

это 10 грамм

по закону сохранения импульса

3u+0.010*700=0

u=2,3  м/с

Ответ средняя скорость винтовки =2,3  м/с

Answer 2

Calculating the Average Velocity of the Rifle

To calculate the average velocity of the rifle when the bullet is fired horizontally, we can use the conservation of momentum principle. The formula for average velocity is given by:

Average Velocity (v) = Total Momentum / Total Mass

The total momentum is the product of the mass and velocity of the bullet, and the total mass is the sum of the mass of the bullet and the rifle.

Using the given values: - Mass of the rifle (m1) = 3 kg - Mass of the bullet (m2) = 10 kg - Velocity of the bullet (v2) = 700 m/s

We can calculate the average velocity using the formula.

Calculation

The total momentum is given by the product of the mass and velocity of the bullet: Total Momentum = m2 * v2

The total mass is the sum of the mass of the bullet and the rifle: Total Mass = m1 + m2

Now, we can calculate the average velocity using the formula: Average Velocity (v) = Total Momentum / Total Mass

Result

Using the given values, the average velocity of the rifle when the bullet is fired horizontally can be calculated as follows:

Total Momentum = 10 kg * 700 m/s = 7000 kg*m/sTotal Mass = 3 kg + 10 kg = 13 kg Average Velocity (v) = 7000 kg*m/s / 13 kg ≈ 538.46 m/s