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With an average acceleration of -0.50m/s^2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.5m/s to a complete stop?

Respuesta :

given that

acceleration = - 0.50 m/s^2

v = 13.5 m/s

so final speed will become zero after it completely stop

so here we can use kinematics

[tex]v_f = v_i + at[/tex]

[tex]0 = 13.5 - 0.50 * t[/tex]

[tex]13.5 = 0.5 * t[/tex]

[tex]t = 27 s[/tex]

so cycle will completely stop after t = 27 s

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