Question

"A car accelerates at a rate of 3.0 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 23.0 m/s?"

Answer 1

.81 m second i think

Step-by-step explanation:

Answer 2

`\boxed{Time = t = 5 seconds}`

Step-by-step explanation:

Acceleration =
`(V_(f)-V_(i))/(t)`

Where

Acceleration = 3 m/s²

`V_(f)` = 23 m/s

`V_(i)` = 8 m/s

So,

3 =
`(23-8)/(t)`

t =
`(15)/(3)`

Time = t = 5 seconds