In Fig, a constant external force P = 140 N is applied to a 20-kg box, which is on a rough horizontal surface. The force pushes the box a distance of 8.0 m, in a time interval of 8.0 s, and the speed changes from v₁ = 0.4 m/s to v₂ = 2.4 m/s. The work done by the external force P is closest to:

 

Transcribed Image Text:

30° 20 kg -8.0 m- 30° 20 kg -8.0 m-

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Given that External Force P 140 N V 1 04 ms V 2 24 ms Weight of Box 20 kg Distance S 80 m Time int... View the full answer