yourfrienddinne1234 yourfrienddinne1234
  • 07-09-2018
  • Physics
contestada

A cyclist is stopped at a traffic light. When the light turns green, the cyclist accelerates at 3.2 m/s2. After 2.4 seconds, what is the cyclist’s speed?

Respuesta :

aristocles aristocles
  • 16-09-2018

acceleration of the cyclist is given as a = 3.2 m/s^2

initial speed of the start is given as vi = 0

we need to find the speed after t = 2.4 s

so we can use here kinematics to find out the speed

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

[tex]v_f = 0 + 3.2* 2.4[/tex]

[tex]v_f = 7.68 m/s[/tex]

so after the given time speed of the cyclist will be 7.68 m/s

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