Question

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?

Answer 1

`\huge\boxed{\sf Time = 10 \ seconds}`

Step-by-step explanation:

Given:

Initial Velocity =
`\sf V_(i)` = 8.0 m/s

Final Speed =
`\sf V_(f)` = 28.0 m/s

Acceleration = a = ?

Required:

Time = t = ?

Formula:

`\sf a = (V_(f) - V_(i))/(t)`

Solution:

`\sf 2 = (28-8)/(t) \\\\2 = (20)/(t) \\\\t = (20)/(2) \\\\t = 10 \ seconds\\\\\rule[225]{225}{2}`

Hope this helped!

~AH1807