Question

Тело свободно падает 320 метров. Сколько времени оно будет падать? Какой скорости достигнет?

Answer 1

Точно не знаю, но g=10m/c^2
v=v0+gt
t=√(2*320)÷10
t=√64
t=8 c
V=10*8=80m/c
ответ: t=8    v=80

Answer 2

Calculation of Time and Velocity for Free Fall

To calculate the time it takes for an object to fall freely and the velocity it reaches, we can use the equations of motion for free fall. In this case, we are given that the body falls a distance of 320 meters.

The equation for the distance fallen during free fall is given by:

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

where: - h is the distance fallen (320 meters in this case) - g is the acceleration due to gravity (approximately 9.8 m/s^2 on Earth) - t is the time taken for the fall

To find the time taken, we rearrange the equation:

t = sqrt((2 * h) / g)

Substituting the given values, we have:

t = sqrt((2 * 320) / 9.8)

Calculating this, we find that the time taken for the body to fall freely is approximately 8.04 seconds.

To calculate the velocity reached during free fall, we can use the equation:

v = g * t

Substituting the values, we have:

v = 9.8 * 8.04

Calculating this, we find that the velocity reached by the body during free fall is approximately 78.792 m/s.

Therefore, the body will take approximately 8.04 seconds to fall and will reach a velocity of approximately 78.792 m/s.

Please note that these calculations assume no air resistance and that the body is falling near the surface of the Earth.