d(t) = ut - g/2 * t^2
d(0) = d(1) = 0, so u = g/2
Max height at d(0.5) = g/4 - g/8 = g/8 = 4 feet or 1.225m
d(0) = d(1) = 0, so u = g/2
Max height at d(0.5) = g/4 - g/8 = g/8 = 4 feet or 1.225m
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depends on a lot of equations depending on a person's weight proportional to Gravitational force of the earth in the given area plus the ability of the leg's muscles of this person to do an anti force to push the body up defeating the gravitational force for one second; therefore, there are a lot of unknowns.
however it's impossible to jump or throw anything upwards 100% vertically according to physics.
however it's impossible to jump or throw anything upwards 100% vertically according to physics.
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just jump, you'll land after a second.