A Brass Ball Is Shot Vertically Upward from the Surface

question 53

Multiple Choice

A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s. One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s.
-How long does it take the ball to reach its maximum height?

• A)2.0 s
• B)2.3 s
• C)4.0 s
• D)4.6 s
• E)8.0 s

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