The girl threw the ball upward with an initial speed of 9.8 m / s. After how many seconds from
| August 11, 2021 | education
The girl threw the ball upward with an initial speed of 9.8 m / s. After how many seconds from the moment of throwing, the ball will fall to the Earth.
To find out the duration of the flight of a ball thrown by a girl, consider the formula: tx = 2tp = 2 * Vb / a = 2 * Vb / g, where Vb is the girl’s throwing speed (Vb = 9.8 m / s); g – acceleration due to gravity (g ≈ 9.8 m / s2).
Let’s perform the calculation: tx = 2tp = 2 * Vb / a = 2 * 9.8 / 9.8 = 2 s.
Answer: The ball thrown by the girl should fall to the ground after 2 seconds.
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