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anonymous

  • 5 years ago

Haris and Ali see a 500.0 kg of Twinkies fall off a delivery truck onto an ice covered road. They start pulling on the crate with a combined force of 1010 N and Rita the truck driver is pulling in the opposite direction, exerting 400 N. What is the acceleration of the crate and how long does it take to reach the door to the physics classroom 350m away that Mr.Cooper is holding open.

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  1. anonymous
    • 5 years ago
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    f=ma a=f/m m=500 f=1010-400=610N ==>a=610/500 s=vt+1/2at^2 350=1/2*610/500*t^2 you can know t.

  2. anonymous
    • 5 years ago
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    oh ok thx

  3. anonymous
    • 5 years ago
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    m = 500 kg F(1) = 1010 N F(2) = -400 N d = 350 m F(net) = F(1) + F(2) = 1010 - 400 = 610 N \[F = ma\]so a = 610/500 = 1.22 m/s^2 \[d = 1/2at^2\]so t^2 = 350/(0.5*1.22) = 350/0.61 = 573.77 s^2 thus, t = 23.95 s Answer: t = 23.95 s

  4. anonymous
    • 5 years ago
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    Thank you

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