Question

Самолет летит со скоростью 400 м/с. Из него бросают вниз грус со скоростью 300 м/с. Какова скорость груза относительно земли?

Answer 1

В момент броска
V = √400^2 + 300^2 =  500 м/с

Answer 2

Calculation of the Speed of the Object Relative to the Ground

To calculate the speed of the object relative to the ground, we need to consider the velocities of the plane and the object being dropped.

The plane is flying with a speed of 400 m/s.

The object is being dropped downwards with a speed of 300 m/s.

To find the speed of the object relative to the ground, we can use the principle of vector addition. The speed of the object relative to the ground is the sum of the speed of the object relative to the plane and the speed of the plane relative to the ground.

According to the principle of vector addition, the speed of the object relative to the ground can be calculated as:

Speed of the object relative to the ground = Speed of the object relative to the plane + Speed of the plane relative to the ground.

Let's calculate the speed of the object relative to the ground using this formula.

Calculation:

Speed of the object relative to the ground = 300 m/s + 400 m/s = 700 m/s.

Therefore, the speed of the object relative to the ground is 700 m/s.

Please note that this calculation assumes that the object is dropped vertically downwards and there are no other forces or factors affecting its motion.