Question

Вагон шириной 2.4 метра движущийся со скоростью 15м/с был пробит пулей летевшей перпендикулярно направлению движения вагон. Смещение отверстий в стенах вагона относительно друг друга равно 6 см. Найдите скорость пули.

Answer 1

   

        S1  -----> направление движения вагона

     \      |    

       \    | S2

         \  |

           \|пуля-дура =)

 

Обозначения: S1=0.06м, S2=2.4м. 

Время, которе успел проехать  вагон, t=S1/Vванона=0.06/15=0.004

Это же время пуля пролетела растояние S2, таким образом её скорость

Vпули=S2/t=2.4/0.004=600м/с

 

 

Answer 2

За то время, как пуля пролетела 2,4 м, вагон проехал 6 см, поэтому скорость пули в  2,4 / 0,06 = 40 раз больше скорости поезда, то есть равна

15 * 40 = 600 м/с.

Answer 3

Calculation of Bullet Speed

To find the speed of the bullet, we can use the principle of conservation of momentum. The momentum before the bullet hits the wagon is equal to the momentum after the bullet passes through the wagon.

Let's assume the mass of the bullet is m and the speed of the bullet is v. The mass of the wagon is much larger than the bullet, so we can neglect its momentum.

The momentum before the bullet hits the wagon is given by:

momentum_before = m * v

After the bullet passes through the wagon, it creates two holes with a displacement of 6 cm (0.06 m) relative to each other. This displacement is perpendicular to the direction of motion of the wagon.

The time it takes for the bullet to pass through the wagon can be calculated using the displacement and the speed of the wagon:

time = displacement / speed_of_wagon

The momentum after the bullet passes through the wagon is given by:

momentum_after = 2 * m * (speed_of_wagon + bullet_speed)

Since the momentum is conserved, we can equate the two expressions for momentum:

momentum_before = momentum_after

Substituting the values, we get:

m * v = 2 * m * (speed_of_wagon + bullet_speed)

Simplifying the equation, we find:

v = 2 * (speed_of_wagon + bullet_speed)

Now we can substitute the given values:

- Speed of the wagon (speed_of_wagon) = 15 m/s - Displacement of the holes (displacement) = 0.06 m

Substituting these values into the equation, we can solve for the bullet speed (v):

v = 2 * (15 + bullet_speed)

To find the bullet speed, we need additional information or assumptions about the speed of the wagon relative to the ground or the bullet speed relative to the wagon. Without this information, we cannot determine the exact speed of the bullet.

Please provide any additional information or assumptions so that we can calculate the bullet speed accurately.