An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 21.0 m/s2 (see figure). The coyote starts at rest 60.0 m from the edge of a cliff at the instant the roadrunner zips past him in the direction of the cliff.

## This question was asked on Feb 02, 2011.

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