physics: BOB or DRWLS follow up question

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What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h?

i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?

  • physics: BOB or DRWLS follow up question -

    Sure. a= averageforce/m

    Then solve for average force. Same equation.

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