irunthepaint irunthepaint

13-11-2021
Physics

contestada

a child has the kinetic energy of 71 j the mass of the child is 27kg show that the velocity of the child at this point is 2.3m/s

Respuesta :

deshantharindu547 deshantharindu547

13-11-2021

Explanation:

kinetic energy of child = 1/2 m v^2

71 j. = 1/2×27kg ×v^2

71×2/27= v^2

142/27 = v^2

5.3. =v^2

v= √5.3

v= 2.3 m/s

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