Question

.Мальчик бросил горизонтально мяч из окна, расположенного на высоте 15 м. Сколько времени летел мяч до земли, и с какой скоростью он был брошен. Если мяч упал на расстоянии 5,3 от основания дома?

Answer 1

Ответ:

ну вот, извиняюсь за 2 фотографии

Answer 2

Calculation of Time and Speed

To calculate the time it took for the ball to reach the ground and the initial speed at which it was thrown, we can use the principles of projectile motion.

Let's assume that there is no air resistance and the acceleration due to gravity is approximately 9.8 m/s^2.

The ball was thrown horizontally from a window located at a height of 15 m. It fell to the ground at a distance of 5.3 m from the base of the house.

To calculate the time of flight, we can use the equation:

time = sqrt(2 * height / g)

where: - height is the initial height from which the ball was thrown (15 m) - g is the acceleration due to gravity (9.8 m/s^2)

Plugging in the values, we get:

time = sqrt(2 * 15 / 9.8) = 1.92 seconds.

To calculate the initial speed at which the ball was thrown, we can use the equation:

speed = distance / time

where: - distance is the horizontal distance the ball traveled (5.3 m) - time is the time of flight (1.92 seconds)

Plugging in the values, we get:

speed = 5.3 / 1.92 = 2.76 m/s.

Therefore, the ball took approximately 1.92 seconds to reach the ground, and it was thrown with an initial speed of approximately 2.76 m/s.

Please note that these calculations assume ideal conditions and do not take into account factors such as air resistance or the angle at which the ball was thrown.