An Object Is Moving in a Straight Line

question 22

Multiple Choice

An object is moving in a straight line.At t = 0,its speed is 5.0 m/s.From t = 0 to t = 4.0 s,its acceleration is 2.5 m/s².From t = 4.0 s to t = 11.0 s,its speed is constant.The average speed over the entire time interval is

• A)9.5 m/s
• B)15 m/s
• C)13 m/s
• D)21 m/s
• E)8.2 m/s

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