A Tennis Ball Is Thrown Upward at an Angle from Point

question 58

Multiple Choice

A tennis ball is thrown upward at an angle from point A. It follows a parabolic trajectory and hits the ground at point D. At the instant shown, the ball is at point B. Point C represents the highest
-Which statement is true concerning the ball when it is at C, the highest point in its trajectory?

• A)The ball's velocity and acceleration are both zero.
• B)The ball's velocity is perpendicular to its acceleration.
• C)The ball's velocity is not zero, but its acceleration is zero.
• D)The ball's velocity is zero, but its acceleration is not zero.
• E)The horizontal and vertical components of the ball's velocity are equal.

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Definitions:

Natural Monopoly

A type of monopoly that arises due to high fixed or start-up costs associated with the business, making it efficient for only one provider to serve the entire market.

Antitrust Law

Laws designed to promote competition and prevent monopolies by regulating corporate practices that restrict trade.

Product Price

The amount of money charged for a product, determined by costs, market demand, and competition.

Natural Monopoly

A market condition where a single firm can supply the entire market at a lower cost than any combination of two or more firms due to economies of scale.