A strobe-light series of pictures is taken of a red ball and a blue ball. The red ball was allowed to drop straight down, and the blue ball was given an initial horizontal velocity. Lines are drawn connecting each red ball image with the corresponding blue ball image. Describe the lines connecting the images.
Question 8 options:

The lines slope down from the red ball to the corresponding blue ball.

The lines slope up from the red ball to the corresponding blue ball.

The lines are vertical.

The lines are horizontal.

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AL2006

Answer:

The lines are horizontal.

Explanation:

Horizontal velocity doesn't have any effect on the acceleration or speed of falling.  In every picture, the red and the blue are both at the same HEIGHT, even though the blue one is pulling away horizontally.

That's why a bullet shot from a horizontal gun, and a bullet dropped from the end of the same gun at the same time, both hit the ground at the same time, even though they may be miles apart horizontally.

The lines that are connecting the images will be horizontal.

A horizontal line refers to a straight line that is drawn from left to right and is parallel to x-axis in the coordinate plane.

From the information given, we are informed that the red ball was allowed to drop straight down, and the blue ball was given an initial horizontal velocity. It should be noted that a horizontal velocity doesn't have an impact on the acceleration of falling.

In conclusion, the lines that are connecting the images will be horizontal.

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