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A 15 kg chair is pushed across the floor at 0.4 m/s. How much work much be done to change the speed to 0.6 m/s?

Respuesta :

parsahosseinalizadeh

Answer:

W=3 J

Explanation:

Aight mattie check it.

W=ΔK, means if ya lookin for the work ya need to look for ΔK

ΔK=½m(V2²–V1²)===> ½× 15×(0.36–0.16)===>

ΔK=½×15×0.2===> ΔK= 3J

W=ΔK=3J

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