Intro to Conservation of Energy Video Lessons

Concept

# Problem: Swimmers at water park have a choice of two frictionless water slides, as shown in the figure. Although both slides drop over the same height h, slide 1 is straight while slide 2 is curved, dropping quickly at first and then leveling out. How does the speed v1 of a swimmer reaching the bottom of slide I compare with v 2, the speed of a swimmer reaching the end of slide 2? A) v1 &gt; v2 B) v1 &lt; v2 C) v1 = v2 D)  The heavier swimmer will have a greater speed than the lighter swimmer, no matter which slide he uses. E) No simple relationship exists between v1 and v2.

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###### Problem Details

Swimmers at water park have a choice of two frictionless water slides, as shown in the figure. Although both slides drop over the same height h, slide 1 is straight while slide 2 is curved, dropping quickly at first and then leveling out. How does the speed v1 of a swimmer reaching the bottom of slide I compare with v 2, the speed of a swimmer reaching the end of slide 2?

A) v1 > v2

B) v1 < v2

C) v1 = v2

D)  The heavier swimmer will have a greater speed than the lighter swimmer, no matter which slide he uses.

E) No simple relationship exists between v1 and v2.