Question

Тело бросили вертикально вверх со скоростью 15м/с . если трением о воздух пренебречь то модуль скорости в момент падения равен

Answer 1

По закону сохранения энергии -  скорость в момент падения равна скорости в момент взлета. 
Ответ: 15 м/c

Answer 2

Calculation of the Speed at the Moment of Impact

To calculate the speed at the moment of impact when an object is thrown vertically upwards with an initial speed of 15 m/s and neglecting air friction, we can use the principle of conservation of mechanical energy.

The initial kinetic energy of the object is equal to the potential energy at the highest point of its trajectory. At the highest point, the object momentarily comes to rest before falling back down. Therefore, we can equate the initial kinetic energy to the potential energy at the highest point.

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