Question

A 25 kg child slides down a waterslide 4 meters high. How fast is child going

when he reaches the bottom of the slide?

Answer 1

Speed of child = 8.94 m/s

Step-by-step 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