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## Homework Statement

you throw a ball directly upward, giving it an initial velocity of 10.0 m/s. neglecting friction, what would be the maximum height of the ball? (explain why you do not need to know the mass of the ball)

## Homework Equations

now the problem itself i understand.

we need Eg=mgh, Ek=1/2mv^2

## The Attempt at a Solution

Ek=Eg

1/2mv^2 = mgh

1/2v^2 = gh

1/2(10.0)^2 = 9.81h

50/9.81 = h

h = 5.1m

i understand that we do not have mass and so it must cancel out, but i am confused as to why we do not need to know the mass?