Hi please may someone help me especially on the sketch part. An object falls from a hovering helicopter and hits the ground at a

Question

Hi please may someone help me especially on the sketch part.

An object falls from a hovering helicopter and hits the ground at a speed of 30 m/s. How long does it take the object to reach the ground and how far does it fall? Sketch a velocity-time graph for the object (ignore air resistance).

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bonexptip 1 year 2021-08-06T13:37:51+00:00 1 Answers 139 views 0

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  1. Thunguyet
    0
    2021-08-06T13:38:59+00:00
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    Ignoring the air resistance it will take about 3 seconds for the object to reach the ground.We know that the acceleration due to gravity is 10m/s2.

    We also know that the final velocity is 30 m/s while the initial velocity is 0 m/s

    we can use the formulae for acceleration to calculate the time taken/

    (final – initial velocity)/timetaken=10

    (30-0)/timetaken=10

    timetaken =30/10=3 seconds

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