A car slows down uniformly from a speed of 22 m/s to rest in 4.0 seconds. How far did it travel in that time

Question

A car slows down uniformly from a speed of 22 m/s to rest in 4.0 seconds. How far did it travel in that time

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Bình An 5 years 2021-07-29T18:15:40+00:00 1 Answers 16 views 0

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  1. linhdan
    0
    2021-07-29T18:17:16+00:00
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    Answer:

    \boxed{\sf Distance \ travelled = 44 \ m}

    Given:

    Initial speed (u) = 22 m/s

    Final speed (v) = 0 m/s (Rest)

    Time taken (t) = 4 seconds

    To Find:

    Distance travelled by car (s)

    Explanation:

    From equation of motion of object moving with uniform acceleration in straight line we have:

    \boxed{ \bold{s = (\frac{v + u}{2} )t}}

    By substituting value of v, u & t in the equation we get:

    \sf \implies s = ( \frac{0 + 22}{2} ) \times 4 \\ \\ \sf \implies s = \frac{22}{2} \times 4 \\ \\ \sf \implies s = 11 \times 4 \\ \\ \sf \implies s = 44 \: m

    \therefore

    Distance travelled by car (s) = 44 m

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