Question

Шар массой 2кг движется со скоростью 4м/с навстречу шару массой 3кгмдвижущимуся со скоростью 2м/с. С какой скоростью будут двигаться шары вместе?

Answer 1

Ответ:

тоже 3мс

Объяснение:

...............

Answer 2

Calculation of the final velocity of the two balls

To determine the final velocity of the two balls when they collide, 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. Mathematically, momentum (p) is defined as:

p = m * v

where: - p is the momentum, - m is the mass of the object, and - v is the velocity of the object.

In this case, we have two balls with masses and velocities as follows:

Ball 1: - Mass (m1) = 2 kg - Velocity (v1) = 4 m/s

Ball 2: - Mass (m2) = 3 kg - Velocity (v2) = -2 m/s (negative sign indicates opposite direction)

To find the final velocity (vf) of the two balls when they collide, we can use the conservation of momentum equation:

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

Substituting the given values:

2 kg * 4 m/s + 3 kg * (-2 m/s) = (2 kg + 3 kg) * vf

Simplifying the equation:

8 kg m/s - 6 kg m/s = 5 kg * vf

2 kg m/s = 5 kg * vf

vf = (2 kg m/s) / 5 kg

vf = 0.4 m/s

Therefore, the two balls will move together with a final velocity of 0.4 m/s after the collision.