Question

Мяч брошен вертикально вверх со скоростью 30м/с.какова его максимальная высота ?

Answer 1

Дано: 
v=30м/c 
g=10м/c^2 
Найти:
h-? 
Решение: 
h=v^2/2g 
h=30*30/20=45м
Ответ:45м 

Answer 2

Calculation of Maximum Height

To calculate the maximum height reached by the ball, we can use the equation for potential energy:

mgh = 0.5mv^2

Where: - m is the mass of the ball - g is the acceleration due to gravity (approximately 9.8 m/s^2) - h is the maximum height - v is the initial velocity of the ball

Given that the ball is thrown vertically upwards with an initial velocity of 30 m/s, we can substitute these values into the equation and solve for h.

Using the given values: - m = 1 (assuming the mass of the ball is 1 kg) - g = 9.8 m/s^2 - v = 30 m/s

Substituting these values into the equation, we get:

1 * 9.8 * h = 0.5 * 1 * 30^2

Simplifying the equation:

9.8h = 0.5 * 900

9.8h = 450

Dividing both sides of the equation by 9.8:

h = 450 / 9.8

Calculating the value:

h ≈ 45.92 meters

Therefore, the maximum height reached by the ball is approximately 45.92 meters.

Please note that the calculation assumes no air resistance and neglects any other external factors that may affect the motion of the ball.