Question

Шар массой 1 кг, катящийся без скольжения, ударяется о стенку, отка­ты­ва­ет­ся от неё. Скорость шара до удара 10 см/с, после удара 8 см/с. Найти количество механической энергии, перешедшей во внутреннюю при ударе.

Answer 1

Разность кинетических энергий до и после удара - вот Ваше количество теплоты)

Answer 2

Calculation of the Mechanical Energy Transferred during the Collision

To find the amount of mechanical energy transferred during the collision, we can use the principle of conservation of mechanical energy. According to this principle, the total mechanical energy before the collision is equal to the total mechanical energy after the collision, assuming no external forces are acting on the system.

The mechanical energy of an object can be calculated using the formula:

Mechanical Energy = (1/2) * mass * velocity^2

Given the information provided, we can calculate the mechanical energy before and after the collision and find the difference to determine the amount of mechanical energy transferred.

Let's denote the mass of the ball as m1 and the velocities before and after the collision as v1 and v2, respectively.

Given: - Mass of the ball (m1) = 1 kg - Velocity before the collision (v1) = 10 cm/s - Velocity after the collision (v2) = 8 cm/s

First, we need to convert the velocities from centimeters per second to meters per second, as the formula requires the velocities to