Premise: "A waterskier is jumping through the air whilst holding onto the line."\nHypothesis: "The waterskier is carted away in an ambulance with a broken foot from the whipout."\nDo we know that the hypothesis entailed by the premise?
Let's be accurate as possible. Think before you answer.
no
A waterskier who is jumping cannot be carted away in an ambulance.

.

Therefore, the answer is no