A boat in a race accelerates uniformly at 0.2 m/s² for 18 seconds to reach a final speed of 6 m/s. Work out the initial speed of the boat.

Question

A boat in a race accelerates uniformly at 0.2 m/s² for 18 seconds to reach a final speed of 6 m/s. Work out the initial speed of the boat.

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Huyền Thanh 4 years 2021-08-25T16:19:20+00:00 1 Answers 298 views 0

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  1. niczorrrr
    -1
    2021-08-25T16:21:12+00:00
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    Answer:

    initial velocity=2.4m/s

    Explanation:

    Using the formula:

    v=u+at

    v= final velocity (6m/s)

    u=initial velocity (???)

    a=acceleration (0.2 m/s²)

    t=time(18 seconds)

    v=u+at

    6=u+(0.2*18)

    6=u+3.6

    u=6-3.6

    u (initial velocity)=2.4m/s

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