Compute all parts of given problemproblem a football player, Ask an Expert

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Compute all parts of given problem:

Problem: A football player can sprint 40 meters in 4 sec. He has constant acceleration until he reaches his top speed at 10 meters and has constant speed after that.

Part A: What is his acceleration?

Part B: What is his constant speed?

Any help I can get on this problem is greatly appreciated! I'm not too familiar with this problem.

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