A car accelerates uniformly from 18km to 80km in 15sec . Find the acceleration of the bus ?​

Question

A car accelerates uniformly from 18km to 80km in 15sec . Find the acceleration of the bus ?​

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Amaya 1 day 2021-10-12T09:28:29+00:00 2 Answers 0 views 0

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    0
    2021-10-12T09:29:45+00:00

    ANSWER:

    Acceleration of the bus = 0.33 m/s²

    COVERSIONS USED:

    1 kmph = 1000/3600 m/s

    1 kmph = 5/18 m/s

    GIVEN:

    u = 18 kmph = 18 × 5/18 = 5 m/s

    v = 36 kmph = 36 × 5/18 = 10 m/s

    t = 15 s

    TO FIND:

    Acceleration of the bus = ?

    FORMULA:

    v = u + at

    EXPLANATION:

    10 = 5 + a(15)

    15 a = 5

    a = 15/5

    a = 1/3 m/s²

    a = 0.33 m/s²

    Acceleration of the bus = 0.33 m/s²

    0
    2021-10-12T09:30:10+00:00

    Step-by-step explanation:

    Acceleration = Change in Velocity/Time

    Change in Velocity = 36-18 = 18 km/h=5 m/s

    Time= 5 Seconds

    Acceleration = 5/5= 1 m/s2

    Equation of motion,s=ut+(1/2)at2

    u=18 km/h=5 m/s

    t=5 s

    a=1 m/s2

    s= (5*5)+(1/2*1*5*5)

    s=25+12.5 i.e., s=37.5 m

    Hope you are clear with my explanations

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