A baseball player throws a ball horizontally. Which statement best describes the ball's motion after it is thrown? (Neglect air resistance.)

A.) Its vertical speed increases, and its horizontal speed increases.

B.) Its vertical speed remains the same, and its horizontal speed increases.

C.) Its vertical speed remains the same, and its horizontal speed remains the same.

D.) Its vertical speed increases, and its horizontal speed remains the same.

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

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