A car reaches a speed of 40m/s from rest in a time of 8 seconds. After the 8 seconds, the car travels at a constant velocity fro 200meters when it runs out of gas. The car slowly comes to rest 30 seconds after running out of gas.

Calculate acceleration for the first 8 seconds

acceleration is change in velocity over time, or:

a = (v2 - v1)/t
where v1 = 0, v2 = 40 m/s and t = 8 s
therefore:
a = (40 - 0)/8
a = 5 m/(s^2)

so there,, :)

Thanks to jai for the correct answer. This is another question that contains a lot of irrelevant information for you to choose among. Whatever happens after 8 seconds does not affect the answer.

To calculate acceleration, we can use the formula:

acceleration = change in velocity / time

In this case, the car starts from rest and reaches a speed of 40 m/s in 8 seconds. So, the change in velocity is 40 m/s - 0 m/s = 40 m/s.

Now we can plug the values into the formula:

acceleration = 40 m/s / 8 s

Dividing 40 m/s by 8 s, we get:

acceleration = 5 m/s²

Therefore, the acceleration for the first 8 seconds is 5 m/s².