Question

ПОМОГИТЕ!!!!! С какой скоростью нужно выпустить вертикально вверх стрелу, чтобы она поднялась на высоту 45 м? Сопротивлением воздуха пренебречь.

Answer 1

V=корень(2*g*h)=корень(2*10*45)=30 (м/с)

Answer 2

Calculating the Initial Velocity for Vertical Projectile Motion

To calculate the initial velocity required to launch an object vertically to a height of 45 meters, we can use the following formula:

v = sqrt(2gh)

Where: - v = initial velocity - g = acceleration due to gravity (approximately 9.81 m/s^2) - h = maximum height

By substituting the given values, we can solve for the initial velocity.

Calculation

Using the given height of 45 meters and the acceleration due to gravity of 9.81 m/s^2, we can calculate the initial velocity:

v = sqrt(2 * 9.81 * 45)

v ≈ 29.7 m/s

Therefore, the initial velocity required to launch the arrow vertically to a height of 45 meters is approximately 29.7 m/s.

This information is based on the physics formula for vertical projectile motion and the given values for height and acceleration due to gravity