Question

Камень бросили вертикально вверх на высотуh=10. Через какое время он упадёт на землю ?

Answer 1

1) t(полное)=t(вверх)+t(вниз), т.к. t(вверх)=t(вниз) то t(полное)=2*t(вверх)
2) h=(g*t^2)/2  отсюда  t(вверх)=(2*h/g)^(1/2) 
3) g=9,8 м/с^2, h=10м  t(вверх)=(2*10/9,8)^(1/2)=1.42 с
4) t(полное)=2*t(вверх)=2*1,42=2,84 секунды

Answer 2

Calculation of Time for the Stone to Fall to the Ground

To calculate the time it takes for the stone to fall to the ground, we can use the equation for the time of flight of an object in free fall. The equation is:

t = sqrt((2h)/g)

Where: - t is the time of flight - h is the initial height (in this case, 10 meters) - g is the acceleration due to gravity (approximately 9.8 m/s^2)

Substituting the given values into the equation, we get:

t = sqrt((2 * 10) / 9.8) = sqrt(20 / 9.8) ≈ 1.43 seconds

Therefore, the stone will take approximately 1.43 seconds to fall to the ground.