Question
19
B, KE = 20 J ; L-41s C. KE = 40 J ; L_4Js D, KE = 2 J ; L-21s E. KE-20J; L-40 Js 19. An 8 Kg box is pulled 20 m up along a 30
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Answer #1

→ w one clone by atablied force ork done by gram ra oNN S=20m ): FS Cos 0° GngZn8),S.cos 150. +

option (B)

cos 00 = 1

cos 1800 = -1

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