alinayahya24 alinayahya24

06-08-2021
Physics

contestada

Distance travelled by a free falling object in the first second is: a) 4.9m b) 9.8m c) 19.6m d) 10m

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Аноним Аноним

06-08-2021

Time=1s=t
Acceleration due to gravity=g=9.8m/s^2
Distance=s

In free fall

[tex]\boxed{\sf s=-\dfrac{1}{2}gt^2}[/tex]

[tex]\\ \sf\longmapsto s=-\dfrac{1}{2}\times 9.8(1)^2[/tex]

[tex]\\ \sf\longmapsto s=-4.9(1)[/tex]

[tex]\\ \sf\longmapsto s=-4.9m[/tex]

Take it positive

[tex]\\ \sf\longmapsto s=4.9m[/tex]

Option a is correct

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