Question

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?

Answer 1

W=3 J

Step-by-step 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