A car accelerates from a speed of 20 km/h to a speed of 45 km/h in 2 minutes. What is its rate of acceleration?​

Question

A car accelerates from a speed of 20 km/h to a speed of 45 km/h in 2 minutes. What is its rate of acceleration?​

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bonexptip 4 years 2021-08-23T04:03:13+00:00 1 Answers 5 views 0

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  1. ngocdiep
    0
    2021-08-23T04:04:36+00:00
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    Answer:

    Acceleration =

    \frac{5}{24} \: or \: 0.208 \: ms {}^{ - 2}

    Step-by-step explanation:

    time taken = 2 min = 2 × 60 = 120 seconds.

    so,

    • t = 120 sec ( time )
    • u = 20 km/h ( initial velocity )
    • v = 45 km/h ( final velocity

    now we know,

    accelertion = \frac{v - u}{t}

    =》

    a = \frac{45 - 20}{120}

    =》

    \frac{25}{120}

    =》

    0.208 \: ms {}^{ - 2}

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