A Tennis Ball Is Thrown Vertically with an Initial Speed

question 31

Multiple Choice

A tennis ball is thrown vertically with an initial speed of 20.0 m/s at time t = 0 s. Approximately, what is the initial speed of the ball relative to an observer in a car that moves horizontally past the launch location with a constant speed of 30 m/s?

• A)10 m/s
• B)20 m/s
• C)30 m/s
• D)36 m/s
• E)50 m/s

Understand how the fixed supply of certain resources affects their returns and pricing.

Grasp the importance of economic profit, pure rent, and market equilibrium in the analysis of factor markets.

Understand the relationship between labor productivity and the labor demand curve.

Identify the factors that cause shifts in labor supply and demand curves.