A blue ball is dropped from the roof of a tall building simultaneously with the horizontal launch of a red ball. Ignoring air resistance, which statement is true?
A) The red ball strikes the ground first with the higher speed.
B) Both balls hit the ground at the same time, but the red ball has the higher speed.
C) The blue ball strikes the ground first, but with the lower speed.
D) Both balls hit the ground at the same time with the same speed.

Question

Quizplus · Accepted Answer

Ignoring air resistance, both balls will hit the ground at the same time because their vertical motion is identical and unaffected by their horizontal motion. However, the red ball will have a higher speed because it has both a horizontal component (due to its initial horizontal launch) and a vertical component of velocity, while the blue ball only has a vertical component.

A Blue Ball Is Dropped from the Roof of a Tall