How long does it take for a brick to reach the ground if thrown from a height of 65m?
August 31, 2021 | education|
Initial data: h (the height from which the brick was thrown, the distance covered by the brick) = 65 m; the fall of the brick is considered free.
Reference values: a (acceleration of a brick when falling) = g (acceleration of gravity) ≈ 10 m / s2.
The time it takes for a brick to reach the ground, we express from the formula: S = H = a * t ^ 2/2, whence t = √ (2 * H / g).
Calculation: t = √ (2 * 65/10) = 3.6 s.
Answer: The brick will reach the ground 3.6 seconds after the start of the fall.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.