Using kinematic reasoning, the answers for the changes that can cause crashes are:
we can manipulate
- The speed of the vehicles, especially that of the second car
- he traffic light change time
- Change some condition of the pavement after the first vehicle passes
Autonomous systems are systems that take a series of signals from the outside, analyze them and carry out actions according to how to handle them.
In that case you have two cars one behind the other at a short distance a traffic light with a yellow light is approaching.
Some parameters can be modified to cause the crash:
- The car in front accelerates to pass the traffic light, but the traffic light changed to red, in this case if the car behind also accelerated, there may not be enough distance to stop and crash.
- You can change the traffic light to green whereby the first car continues its speed, but the traffic light time changes very quickly to red, whereby the first car stops, but the car behind cannot stop.
- The car behind accelerates to also pass the yellow light, but turns red and the first one crashes to a stop.
- We change some condition of the pavement after the first vehicle passes, for example wetting the pavement, which decreases the coefficient of friction, consequently the second vehicle does not have time to stop.
We can appreciate that if there is not a good and fast communication between the two vehicles, it is easy for them to crash.
In conclusion, using kinematic reasoning, the answers for the changes that can test shocks are found:
- The second vehicle increases speed and the first must brake sharply
Learn more about stopping distance here:
brainly.com/question/24254597
To solve this problem we will start using the concepts related to the electric field, from there we will find the load exerted on the body. Through this load it will be possible to make a sum of forces in balance to find the load that a human supports. Finally with these values it will be possible to find the repulsive force. We will proceed as follows,
The electric field is

Here,
k = Coulomb's Constant
Q = Charge
R = Distance (At this case from the center of mass of the earth to the surface)
Rearranging to find the charge,

Replacing,


Since the electric field is directed towards the center of earth, the charge is negative.
PART A) Once the load is found we can proceed to apply the balance of Forces, for which the electrostatic force must be equivalent to the weight, this in order to satisfy the balance, therefore


Replacing,

Solving for q,

PART B) Finally using the given distance and the values of the found load we can find the repulsive Force, which is



PART C) The answer is no. According to the information found, we can conclude that traveling through an electric field is not viable because there is a repulsive force of great magnitude acting on the body.
Force is the change in momentum over a specific time. The change of momentum is therefore the force multiplied by the time that the force acts, so 3000x4.0=12000 N s=12000 kg m/s
Dropping it on a hard surface.