A ball is thrown straight up about fifty meters into the air. As the ball is traveling toward Earth and returning to the person who threw it, which of the following is most likely to be true?

a. The speed of the ball is increasing
b. The potential energy of the ball in increasing
c. The mass of the ball is decreasing
d. The frictional force of air resistance acting on the ball is decreasing


Answer: a. The speed of the ball is increasing

Environmental & Atmospheric Sciences

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