# ws04 - Worksheet 4 Two-dimensional motion II(Projectile...

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Worksheet 4: Two-dimensional motion II (Projectile motion) Questions 1. Pendulum Swinging In the first picture, it drops straight downwards. In the second picture, it mostly falls downwards, but also has some initial ve- locity to the right. (the initial velocity vector is tangent to the path of the pendulum). The third positoin has an initial velocity that’s horizontal to the right. It begins moving to the right and then falls under the influence of gravity. The fourth one begins to move up and to the right before falling under the influence of gravity. The fifth one falls straight down, just like the first picture. 2. Throwing an object from atop a cliff You will send the shot farther if you shoot at an angle shallower than 45 o . Throwing an object from the cliff essentially gives the ball more time in the air, hence having more horizontal velocity (while sacrificing some height) will cause the ball to go further.

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