Question

Помогите пожалуйста решить,срочно, желательно с объяснением. Заранее спасибо ребят)тело массой m брошено брошено с горизонтальной поверхности со скоростью V0 под углом альфа к горизонту.Чему равен модуль изменения импульса тела за время полета ?

Answer 1

∆P=2mV∙sinα, Искомый вектор - разность двух векторов, одинаковых по модулю и направленных один под углом α к горизонту, другой -α. Теорема косинусов

Answer 2

Calculating Change in Momentum of a Projectile

To calculate the change in momentum of a projectile, we can use the formula for momentum, which is the product of an object's mass and its velocity. The change in momentum can be calculated by finding the difference between the final momentum and the initial momentum of the projectile.

Given: - Mass of the body: m - Initial velocity: V0 - Angle of launch: α

The change in momentum of the body can be calculated using the following steps:

1. Calculate the initial momentum (P_initial) of the body. 2. Calculate the final momentum (P_final) of the body. 3. Find the difference between the final and initial momentum to obtain the change in momentum.

Let's proceed with the calculations.

Calculations

1. Initial Momentum (P_initial): - The initial horizontal velocity of the body can be calculated using the formula: V0 * cos(α) - The initial vertical velocity of the body can be calculated using the formula: V0 * sin(α) - The initial momentum (P_initial) can be calculated using the formula: m * V0 * cos(α) for the horizontal component and m * V0 * sin(α) for the vertical component.

2. Final Momentum (P_final): - The final momentum of the body can be calculated when it reaches the highest point of its trajectory, where the vertical velocity becomes zero.

3. Change in Momentum: - The change in momentum can be calculated by finding the difference between the final and initial momentum.

Conclusion

The change in momentum of the body can be calculated using the above steps. If you need further assistance with the specific numerical values or any other related calculations, feel free to provide additional details for a more precise response.