A car is going 8 meters per second on an access road into a highway and then accelerates at 1.8 meters per second squared for 7.2
seconds. How fast is it then going?

20.96 m/s is the final speed.

Step-by-step explanation:

Given that:

Initial speed of the car = 8 m/s

Acceleration of the car = 1.8 m/

Time for which the car accelerates = 7.2 seconds

To find:

The speed of car after accelerating for 7.2 seconds at an acceleration of 1.8 m/ = ?

Solution:

First of all, let us have a look the formula given for the final velocity of an object with given initial speed, acceleration and time:

Where is the final speed of object

is the initial speed of an object

is the acceleration of object and

is the time

Here,

and

To find:

Let us put all the given values in the formula:

So, the answer is:

20.96 m/s is the final speed.

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

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step-by-step explanation: