Acar starts from a stop at a traffic light and accelerates at a rate of 4.0 m/s 2 . immediately on reaching a speed of 32 m/s, the driver sees that the next light ahead is red and instantly applies the brakes (reaction time = 0.00 s). the car decelerates at a constant rate and comes safely to a stop at the next light. the whole episode takes 15.0 s. how far does the car travel?

140.04 m from the stop.

Explanation:

We can divide the motion in two parts:

First, we have an uniformly accelerated motion, using the following formula we calculate the distance traveled in this part:

In the second part, the car decelerates, but we don't know the value of this deceleration. We have to calculate the time spend in the first part, in order to know the time spend on second part:

Recall that total time is 15 s

Now, we calculate the deceleration:

Finally, we find the distance traveled in the second part. In this way, we can know how far does the car travel.

i dont think you are wrong for wanting to get even with someone who did you wrong.

(i'm an eye for an eye kind of person) but if this person hurt you in a sexual way, i dont suggest doing anything to him. he should be taken to the proper authorities, you could go to jail depending on what you do. if it was something small like your sibling took your spot on the couch, than yea, i would get even with him by taking one of his favorite snacks lol. but i dont suggest you doing anything illegal.

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2