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PLEASE HELP!!
A swimmer starting from rest has a final velocity of 2.0 m/s after 20 seconds. What is her average acceleration?
O A. 18 m/s2
OB. 22 m/s2
OC. 0.10 m/s2
O D. 40 m/s2

Respuesta :

Answer:

[tex]a=0.1\ m/s^2[/tex]

Explanation:

Given that,

Initial velocity, u = 0

Final velocity, v = 2 m/s

Time, t = 20 s

We need to find the acceleration of the swimmer. The acceleration of an object is equal to the change in velocity per unit time. It can be given by :

[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{2\ m/s}{20\ s}\\\\a=0.1\ m/s^2[/tex]

So, her average acceleration of the swimmer is [tex]0.1\ m/s^2[/tex].

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