A motorboat starting from rest travels in a straight line on a lake. If the boat achieves a speed of 9.0 m/s in 13 s, what is the boat’s ave

Question

A motorboat starting from rest travels in a straight line on a lake. If the boat achieves a speed of 9.0 m/s in 13 s, what is the boat’s average acceleration?

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Ladonna 4 years 2021-08-07T18:55:23+00:00 1 Answers 66 views 0

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  1. thnahdat
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    2021-08-07T18:56:24+00:00
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    Answer:

    Acceleration, a=0.69\ m/s^2

    Explanation:

    Given that,

    Initial speed of the motorboat, u = 0

    Final speed off the motorboat, v = 9 m/s

    Time, t = 13 s

    We need to find the boat’s average acceleration. It is equal to the change in velocity divided by time taken. SO,

    a=\dfrac{v-u}{t}\\\\a=\dfrac{9-0}{13}\\\\a=0.69\ m/s^2

    So, the acceleration of the boat is 0.69\ m/s^2.

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