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2-D and projectile motion

# 2-D and projectile motion - Physics 125 Discussion#4...

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Physics 125 Discussion #4 1 Problem 1: A body projected horizontally A motorcycle stunt rider rides off the edge of a cliff. Just at the edge his velocity is horizontal, with magnitude 9.0 m/s. x direction y direction initial position x 0 = y 0 = initial velocity v 0x = v 0y = acceleration a x = a y = (3) What is the motorcycle’s position ( x , y ) at t = 0.50 s? (1) First, let’s define our coordinate system. The coordinate system is shown in the figure. We choose the origin at the edge of the cliff, where the motorcycle first becomes a projectile. (2) List all the known factors (in both x- and y- directions). 0 v harpoonrightnosp x y O

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Physics 125 Discussion #4 2 (4) What is the motorcycle’s distance from the origin at t = 0.50 s? (5) What are the x- and y- components of velocity at t = 0.50 s? (6) Express the velocity at t = 0.50 s in terms of magnitude and direction.
Physics 125 Discussion #4 3 Problem 2: Height and Range of a Baseball A Batter hits a baseball so that it leaves the bat with an initial speed v 0 = 37.0 m/s at an initial angle α 0 = 53.1 o . (1) First, let’s define our coordinate system as shown in the figure.

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