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A 35-kg child starting from rest slides down a water slide with a vertical height of 20 m. What is the child’s speed a.)half-way down the slide’s vertical distance
b.) three-fourths the distance (ignoring friction)

  • physics -

    Use energy equation
    mgh=(1/2)mv²
    to solve for v:
    v=√(2gh)
    for h=5m, g=9.8m/s²
    v=√(2*9.8*5)
    =9.9 m/s in the direction along the slide.

    You can solve for other heights in a similar way.

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