Question

Деревянный шар перед скатыванием с лестницы имел горизонтальную скорость 1.7 м/с. Высота и нирина каждой ступени равны по 18 см. О какую по счету ступеньку шар ударится впервые?

Answer 1

Если в квадратный скобках получится целое число, то прибавлять единицу не надо

Answer 2

Calculation of the Number of Steps

To determine the number of steps the wooden ball will hit for the first time, we need to consider the horizontal velocity of the ball and the height and depth of each step.

Given: - Horizontal velocity of the ball: 1.7 m/s - Height and depth of each step: 18 cm

To calculate the number of steps, we can use the formula:

Number of steps = (horizontal velocity of the ball) / (depth of each step)

Let's substitute the given values into the formula:

Number of steps = 1.7 m/s / 0.18 m

Calculating this, we find that the number of steps the wooden ball will hit for the first time is approximately 9.44 steps.

However, since the number of steps must be a whole number, we need to round this value down to the nearest whole number. Therefore, the wooden ball will hit the 9th step for the first time.

Please note that the above calculation assumes that the ball rolls without any friction or external forces affecting its motion.