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A car accelerates at a rate of 2.0 m/s2. If its original speed is 8.0 m/s, how many seconds will it take the car to reach a final speed of 28.0 m/s?

Respuesta :

Answer:

[tex]\huge\boxed{\sf Time = 10 \ seconds}[/tex]

Explanation:

Given:

Initial Velocity = [tex]\sf V_{i}[/tex] = 8.0 m/s

Final Speed = [tex]\sf V_{f}[/tex] = 28.0 m/s

Acceleration = a = ?

Required:

Time = t = ?

Formula:

[tex]\sf a = \frac{V_{f} - V_{i}}{t}[/tex]

Solution:

[tex]\sf 2 = \frac{28-8}{t} \\\\2 = \frac{20}{t} \\\\t = \frac{20}{2} \\\\t = 10 \ seconds\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807