Question

A 1.90 kg water balloon is shot straight up with an initial
speed of 3.20 m/s. **(a)** What is the kinetic energy
of the balloon just as it is launched? **(b)** How
much work does the gravitational force do on the balloon during the
balloon's full ascent? **(c)** What is the change in
the gravitational potential energy of the balloon–Earth system
during the full ascent? **(d)** If the gravitational
potential energy is taken to be zero at the launch point, what is
its value when the balloon reaches its maximum height?
**(e)** If, instead, the gravitational potential
energy is taken to be zero at the maximum height, what is its value
at the launch point? **(f)** What is the maximum
height?

Answer #1

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