James and John Dive from an Overhang into the Lake

question 8

Multiple Choice

James and John dive from an overhang into the lake below.James simply drops straight down from the edge.John takes a running start and jumps with an initial horizontal velocity of 25 m/s.If there is no air resistance,when they reach the lake below

• A)the splashdown speed of James is larger than that of John.
• B)the splashdown speed of John is larger than that of James.
• C)they will both have the same splashdown speed.
• D)the splashdown speed of James must be 9.8 m/s larger than that of John.
• E)the splashdown speed of John must be 25 m/s larger than that of James.

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