Question

Physics 2010 Spring 2019 Two- and three-dimensional motion 3. You sit inside airpl han ball 70 cm into the air. an airplane that is moving at 200 m/s. You decide to practice your juggling and throw a (a) With what initial velocity did you throw the ball? (b) To an observer outside the plane [don't ask], what was the ball's initial velocity? Give your answer as a vector. (c) How far does the ball travel horizontally? (d) Plot the ball's trajectory on the axes below.

Answer 1

(a) Initial velocity = squareroot 2gh = squareroot 2 times 9.81 times 0.7 = 3.706 m/s = 3.706 i^^m/s (b) in outside observer fall�s initial velocity = 200 j^^+ 3.706 i^^(c) horizontal distance travelled by ball = 200 times 2 times squareroot (200)^2 + (3.706)^2 times 3.706/squareroot (200)^2 + (3.706)^2 = 200 times 2 times 3.706/9.81 = 151.11 m

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