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March 27, 2017

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a car is moving on straight road with uniform acceleration .the speed of the car varies with time as of-4m/s,2 s-8m/s,so on till 10 seconds. Calculate the distance travelled in 10 seconds.
Asked 30 seconds ago under General Help

  • physics - ,

    What is the speed at t = 0?
    When is the speed -8 m/s?
    Why are the speeds negative?

  • physics - ,

    if we assume that
    vₒ = - 4 m/s,
    vb = - 8 m/s.
    a =?, s = ?

    v = vₒ +a•t,
    a =(v- vₒ)/t = {-8 –(-4)}/10 = -0.4 m/s².
    s= |vₒ|• t+a•t²/2 = 4•10 – 0.4•100/2 = 20 m.
    (|vₒ| is the magnitude of initial velocity)

  • physics - ,

    since we have -4m/s^2 s-8m/s
    it appears that

    Vo = -8
    a = -4

  • physics - ,

    I find it impossible to interpret the problem as written. Take more care to separate sentences with a space and capitalize first words. Exponents must be preceded by ^. Velocity data at a specific time should clearly state the time as well as the velocity

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