Con qué velocidad inicial debe lanzarse un objeto directamente hacia arriba para que su altura máxima sea 25 m?

v₀ = 22.1 m / s

Explanation:

This is an exercise in kinetics, let's set a vertical reference system with the positive direction up.

          v² = v₀² - 2 g (y-y₀)

the final velocity at the highest point is zero and as it leaves the floor the initial height is zero

          0 = v₀² - 2gy

         v₀ =

let's calculate

        v₀ =

        v₀ = 22.1 m / s

false br

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it