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March 1, 2015

March 1, 2015

Posted by **youlife** on Tuesday, September 10, 2013 at 7:14pm.

(a) How long (in s) did it take Alice to catch up with Mary?

(b) How far (in m) did Alice still have to run when she just caught up to Mary?

(c) How long (in s) did Alice take to reach the finish line after she just caught up to Mary?

Mary starts to accelerate when Alice just catches up to her, and accelerates all the way to the finish line and crosses the line exactly when Alice does. Assume Mary's acceleration is constant.

(d) What is Mary's acceleration (in m/s2)?

(e) What is Mary's velocity at the finish line (in m/s)?

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