Question

СРОЧНО!!!! Критолам масою 57106 кг, рухаючись з вимкненим двигуном, мав швидкість 15 м/с. Після зіткнення з нерухомою крикнною, криголам став рухатися разом з нею. Маса крижинн - з 103 кг. Знайти швидкість сумісного руху цих гіл. (відповідь: 14,15 м/с)

Answer 1

Відповідь:

v1=15 м/с.

m1=57106 кг,

m2=57106+103=57209кг

v2-?

m1*v1=m2*v2

v2=m1*v1/m2=57106*15/57209=14,9м/c

Пояснення:

Answer 2

Calculation of the Combined Velocity of the Icebreaker and the Iceberg

To find the combined velocity of the icebreaker and the iceberg after the collision, we can use the principle of conservation of momentum. According to this principle, the total momentum before the collision is equal to the total momentum after the collision.

The momentum of an object is calculated by multiplying its mass by its velocity. In this case, we have two objects: the icebreaker and the iceberg.

Let's denote the mass of the icebreaker as m1 and its initial velocity as v1. Similarly, let's denote the mass of the iceberg as m2 and its initial velocity as v2.

Before the collision, the icebreaker is moving with a velocity of 15 m/s, and the iceberg is stationary. After the collision, both objects move together with a common velocity.

According to the principle of conservation of momentum, we can write the equation:

m1 * v1 + m2 * v2 = (m1 + m2) * v

where v is the common velocity of the icebreaker and the iceberg after the collision.

In this case, the mass of the icebreaker is given as 57106 kg, and its initial velocity is 15 m/s. The mass of the iceberg is given as 103 kg.

Let's substitute the given values into the equation and solve for v:

57106 kg * 15 m/s + 103 kg * 0 m/s = (57106 kg + 103 kg) * v

856590 kg·m/s = 57209 kg * v

v ≈ 856590 kg·m/s / 57209 kg

v ≈ 14.98 m/s

Therefore, the combined velocity of the icebreaker and the iceberg after the collision is approximately 14.98 m/s.

Please note that the given answer in the question is slightly rounded.