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19 May, 07:51

if a car engine does 600,000 J of work over a 500m distance and the mass of the car is 250Kg then what is the final velocity of the car?

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  1. 19 May, 08:10
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    Given that

    Work = 600,000 J,

    distance (S) = 500 m,

    mass (m) = 250 Kg,

    Determine the velocity of car (v) = ?

    We know that,

    Work = Force * distance

    => Force = Work : distance

    = 600,000 : 500

    = 500 N.

    Also Force F = m. a; from Newtons II law

    500 = 250 * a

    a = 2 m/s.

    Final Velocity from the given formula

    V² = u² + 2. a. s

    = 0 + 2 * 2 * 500

    = / sqrt{2000}

    v = 44.7 m/s
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