In a Relay Race, Runner a Is Carrying the Baton

question 71

Multiple Choice

In a relay race, runner A is carrying the baton and has a speed of 2.80 m/s. When he is 25.0 m behind the starting line, runner B starts from rest and accelerates at 0.0800 m/s². How long afterwards will A catch up with B to pass the baton to B?

• A) 5.17 s
• B) 10.5 s
• C) 11.9 s
• D) 20.4 s
• E) Runner A never catches up.

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