Posted by **Stephanie** on Friday, October 2, 2009 at 3:47pm.

A particular sprinter reaches a horizontal acceleration of 13.3 m/s2 out of the starting block. The starting block is tilted such that the vertical component of the force which the starting block exerts on the sprinter compensates for the weight of the sprinter, leading to a zero vertical acceleration. What is the magnitude of the force with which the 64 kg sprinter pushes against the starting block?

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