Final answer:
The horizontal velocity of the coyote as he leaves the cliff is 45.8 m/s.
Step-by-step explanation:
The horizontal velocity of the coyote as he leaves the cliff is the same as the constant horizontal velocity provided by the roller skates, which is 45.8 m/s. The vertical velocity of the coyote will depend on the acceleration due to gravity and the height of the cliff. Since only the horizontal velocity is mentioned in the question, we can assume that the vertical motion is not relevant. Therefore, the horizontal velocity of the coyote as he leaves the cliff is 45.8 m/s.