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23 February, 23:53

An object starts from rest and falls freely near earths surface for 3.00 seconds. Calculate the final speed of the object

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  1. 24 February, 00:15
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    Given:

    u (intial velocity) = 0

    a (acceleration) = 9.8 m/s^2 (as it is a free falling object acceleration is due to gravity)

    t = 3 seconds

    In order to find the final velocity v

    We know that

    v = u+at

    Where v is the final velocity measured in m/s

    u is the initial velocity measured in m/s

    a is the acceleration measured in m/s^2.

    t is the time taken to fall down measured in seconds

    Now substituting the given values in the above formula we get

    v=u + at

    v=0 + (9.8 x 3)

    v=29.4m/s

    Thus the final velocity is 29.4 m/s.
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