If a freely falling object were equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s², then its speed rea

Question

If a freely falling object were equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s², then its speed reading would increase each second by If a freely falling object were equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s², then its speed reading would increase each second by __________.a. 10 m/s. b. 30 m/s. c. 20 m/s. d. 40 m/s. e. depends on its initial speed

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Hưng Khoa 5 years 2021-08-13T17:46:07+00:00 2 Answers 23 views 0

Answers ( )

  1. kimchi2
    0
    2021-08-13T17:47:43+00:00
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    Answer:

    20 m/s

    Explanation:

    The acceleration of an object determines the increase in velocity per second.

    In this case the acceleration is 20m/s^2.

    a=\frac{v}{t}=\frac{\frac{20m}{s}}{s}

    That is, the increase is 20m/s each second.

    I hope this is useful for you

    Regards

  2. thachthao
    0
    2021-08-13T17:48:06+00:00
    Reply

    Answer:

    velocity will increase 20 m/sec each second

    Explanation:

    Given that the acceleration due gravity is g=20m/sec^2

    We have to find the increase in the speed each second

    We know that acceleration is nothing but rate of change of velocity as it changes  20m/sec^2 so the speed will also changes with 20 m/sec  

    the object is falling freely so initial velocity u =0 m/sec

    Acceleration due to gravity g= 20 m/s²

    Time = 1 sec

    From first law of motion

    v=u+gt\\=0+20\times 1\\=20m/sec

    the velocity will increase 20 m/sec each second

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