Posted by **Courtney** on Monday, October 10, 2011 at 7:42pm.

Two football players start from rest, 12 m apart. They run directly towards each other, both players accelerating. The first player has an acceleration of 5 m/s^2 and the second has an acceleration of 4 m/s^2. a) how much time passes before they collide? b) at the instant they collide, how far has the first player run?

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