The body is thrown vertically upward at a speed Vo = 10m / s. What will be the coordinate of the body

| May 4, 2021 | education

The body is thrown vertically upward at a speed Vo = 10m / s. What will be the coordinate of the body at the moment when the speed of the body becomes equal to 6 m / s? At what point in time from the beginning of the movement of the body will its speed become equal to zero?

Data: V0 (throw up speed, initial speed) = 10 m / s; V1 (speed at the desired height) = 6 m / s; Vk (final speed) = 0 m / s.

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

1) The height at which the body’s speed becomes 6 m / s: h = S = (V0 ^ 2 – V1 ^ 2) / 2g = (10 ^ 2 – 6 ^ 2) / (2 * 10) = 3.2 m.

2) Duration of ascent: t = (V0 – Vk) / g = (10 – 0) / 10 = 1 s.

Answer: The speed of the thrown body will decrease to 6 m / s at a height of 3.2 m; the speed will be zero 1 s after the start of the movement.



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