A body thrown from a certain height falls freely. How long does it take to reach a speed of 80 M / s?

These tasks: free fall; V (the speed to be reached by the thrown body) = 80 m / s.

Reference values: g (acceleration due to gravity) ≈ 10 m / s2.

The duration of the fall of the body under consideration until reaching a speed of 80 m / s is calculated by the formula: t = (V – V0) / a = (V – 0) / g = V / g.

Let’s make a calculation: t = 80/10 = 8 s.

Answer: The duration of the fall of the thrown body will be 8 seconds.