Question

С вертолета находящегося на высоте 180 м сброшен груз . если вертолет неподвижен (g=9.8 )то груз достигнет земли за время ??

Answer 1

h=gt^2
gt^2=2h.
Выразим время:
t^2=2h/g
t=√(2h/g)
t=√(2*180/9.8)=√(1800/49)=6 (приближенное значение)

Answer 2

Calculation of Time for the Object to Reach the Ground

To calculate the time it takes for an object to reach the ground when dropped from a helicopter at a height of 180 m, we can use the equation of motion for free fall:

h = (1/2) * g * t^2

Where: - h is the height (180 m in this case) - g is the acceleration due to gravity (9.8 m/s^2) - t is the time it takes for the object to reach the ground (what we want to find)

Rearranging the equation to solve for t, we get:

t = sqrt(2h / g)

Substituting the given values, we can calculate the time it takes for the object to reach the ground:

t = sqrt(2 * 180 / 9.8) ≈ 6.78 seconds

Therefore, the object will reach the ground in approximately 6.78 seconds when dropped from a helicopter at a height of 180 m.