Question

При зіткненні двох куль їх швидкості змінилися на 60 м/с та на 20 м/с. Маса легшої кулі 1,5 кг. Яка маса важчої кулі?

Answer 1

Ответ:

m1/m2 = v2+v1

1.5/x = 20/60

1.5*60=20x

90 = 20x

x = 4.5

m2 = 4.5 кг

Answer 2

Calculation of the Mass of the Heavier Ball

To calculate the mass of the heavier ball, 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 given by the product of its mass and velocity. Therefore, we can write the equation:

(mass of the lighter ball * change in velocity of the lighter ball) + (mass of the heavier ball * change in velocity of the heavier ball) = 0

Given that the change in velocity of the lighter ball is 60 m/s and the change in velocity of the heavier ball is 20 m/s, and the mass of the lighter ball is 1.5 kg, we can substitute these values into the equation:

(1.5 kg * 60 m/s) + (mass of the heavier ball * 20 m/s) = 0

Simplifying the equation, we get:

90 kg·m/s + 20 m/s * mass of the heavier ball = 0

To solve for the mass of the heavier ball, we can isolate the variable:

20 m/s * mass of the heavier ball = -90 kg·m/s

mass of the heavier ball = (-90 kg·m/s) / (20 m/s)

mass of the heavier ball = -4.5 kg

Since mass cannot be negative, we can conclude that there is an error in the given information or calculation. Please double-check the values provided.