# The body falls freely from a height and at the surface of the earth reaches a speed of 100 m / s.

December 26, 2020 | education

| **The body falls freely from a height and at the surface of the earth reaches a speed of 100 m / s. From what height does the body fall?**

Given:

V = 100 m / s;

g = 9.8 m / s ^ 2;

Find h.

Decision:

1) We need to find the time t, since it is used in the formula for finding the height.

t = V / g = 100 / 9.8 = 10 s approx.

2) Find the height by the formula

h = gt ^ 2/2.

Let’s plug in the values and find the answer.

h = 9.8 * 10 ^ 2/2 = 500 meters

Answer: 5 m

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.