Question

A foce change spped from 4m/s to 8m/s what is work

Answer 1

check the attachment

Answer 2

ஜ۩۞۩ஜ ӇЄƳƛ MƛƬЄ ஜ۩۞۩ஜ

Answer..

Let the mass of object be m.

By work - energy theorem,

W = ∆KE = KE(f)–KE(i)

W = ½m(8²-4²)

W = ½m (64 - 16 )

W = ½m( 48 )

W = 24m J

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