A 25 kg child slides down a waterslide 4 meters high. How fast is child going when he reaches the bottom of the slide?

Speed of child = 8.94 m/s

Explanation:

Given:

Mass of child = 25 kg

Height = 4 meter

Find:

Speed of child

Computation:

P.E = mgh

P.E = (25)(10)(4)

P.E = 1000 J

K.E = P.E

So,

(1/2)(m)(v)² = 1000

(1/2)(25)(v)² = 1000

(v)² = 80

v = 8.94 m/s

Speed of child = 8.94 m/s

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