Respuesta :

at constant acceleration  the equation  is

v = u + at     where u = initial speed,  a = acceleration. t = time and v = final speed

So here we have  18 = 0 + 7t

t = 18/7  = 2.6 seconds ( to nearest tenth)
sandlee09

Answer:

2.57 seconds

Step-by-step explanation:

Great question, it is always good to ask away and get rid of any doubts that you may be having.

Before we can solve this question we need to create a formula that calculates the final speed. The formula will be the following,

[tex]Vf = Vi+7(t)[/tex]

Where:

  • Vf is the final Velocity
  • Vi is the initial velocity
  • A is the acceleration
  • t is the time in seconds

Now that we have the formula we can plug in the values given to us in the question and solve for the amount of time (t).

[tex]Vf = Vi+7(t)[/tex]

[tex]18 = 0+7(t)[/tex]

[tex]2.57 = t[/tex]

Finally, we can see that it would take the cyclist 2.57 seconds (approximately) to reach a speed of 18 m/s

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.