A balloonist happens to drop his metal ballpoint pen from his balloon as he is taking notes on his flight. Because his pen has a streamlined shape, air resistance has little effect on its fall. The pen strikes the ground at 22 m/s. How high was the balloon?

Question

mrnood · Answer

do you know the equations for motion  under constant acceleration?

There is 1 equation that links distance to velocity and acceleration

In this question - you know:

Initial velocity = 0
Final velocity = 22m/s
acceleration = g = 9.81m/s^2

So - find the equation, and solve it for distance

isaiah.feynman · Answer

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