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zaphod

  • 3 years ago

A car of mass 800kg moving at 20ms^-1 is brought to rest by application of the brakes in a distance of 100m. Find the force exerted by the brake(friction) if there is no other resistance to motion.

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  1. zaphod
    • 3 years ago
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    @Algebraic! @Callisto @physicswork

  2. Algebraic!
    • 3 years ago
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    Vf^2 =Vi^2 -2ad 0 =Vi^2 -2ad Vi^2 = 2ad a= Vi^2/2d F=ma

  3. zaphod
    • 3 years ago
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    i got the answer thnkss :)

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