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Kelli has a mass of 42-kg, and she is sitting on a playground swing that hangs .4m above the ground. Her mom pulls the swing back and releases it when the seat is 1 meter above the ground. How fast is Kelli moving when the swing passes through its lowest point?

Sagot :

ilovemywrestling

Answer:

3.4 m/s

Explanation:

may i be marked brainliest?

E(P)=m*g*h

      =42*10*1

      =420 J

E(P)=E(K)

E(K)=1/2MV^2

 420=½*42*V^2

V^2=20

V=4.47

What is velocity ?

"Velocity is essentially a vector quantity. It is the rate of change of distance. It is the rate of change of displacement. Speed of an object moving can never be negative. The velocity of a moving object can be zero. "

Know more about velocity here

https://brainly.com/question/18084516

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