A Baseball Is Thrown Straight Upward

question 112

Multiple Choice

A baseball is thrown straight upward. At the very top of its trajectory its instantaneous velocity is zero and its acceleration is

• A)zero.
• B)10 m/s².
• C)between zero and 10 m/s².
• D)none of these.
• We can better understand this by noting that when it is at its highest point
• E)there momentarily is no motion.
• F)its rate of change of motion is still 10 m/s².
• G)although its velocity is not changing, its direction is.

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