# physics

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A projectile of mass 0.817 kg is shot straight up with an initial speed of 25.5 m/s. (a) How high would it go if there were no air resistance? (b) If the projectile rises to a maximum height of only 9.14 m, determine the magnitude of the average force due to air resistance.

• physics -

a. V^2 = Vo^2 + 2g*h
h = (V^2-Vo^2)/2g
h = (0-(25.5))/-19.6 = 33.2 m.

• physics -

33.2

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