Two marbles are launched at t = 0 in the experiment illustrated in FIGURE 4-29. Marble 1 is launched horizontally with a speed of 4.20 m/s from a height h = 0.950 m. Marble 2 is launched from ground level with a speed of 5.94 m/s at an angle θ = 45.0° above the horizontal.

(a) Where would the marbles collide in the absence of gravity? Give the x and y coordinates of the collision point.

(b) Where do the marbles collide given that gravity produces a downward acceleration of g = 9.81 m/s²? Give the x and y coordinates.

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