Considering how the parts of a system work together and affect one another, other systems, and the environment is called _______
1 answer:
Answer:
Hi
before I answer a question I think very deeply and try my best, hope it helps...
As you know there are many different types of systems. For example, The solar system, galaxies, quantum systems, atoms, molecules, orchestras, nervous system, etc, things you may not have even considered a system. To get to the basis of a system we must first understand what a system is then we will show some examples. A system is a group of Parts (parts could mean anything even dark energy and dark matter) that work together to accomplish something. For example, your body has many many trillions of cells that all try to accomplish the functions of humans which include thinking, moving, breathing, circulation, etc. Cells in turn are a system that have counterparts called organelles that accomplish harvesting energy, making new proteins, getting rid of waste, and so on. These are some systems which we highly dependent upon.
Well i hope it helped
Spiky Bob your answerer
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A) The car overtakes the truck after 7.56 s
B) Initial distance between car and truck: 37.1 m
C) Speed of the truck: 15.9 m/s, speed of the car: 25.7 m/s
D) See graph in attachment
Explanation:
A)
The truck starts from rest and has a constant acceleration, so its position at time t can be written as
where
d is the initial distance between the truck and the car (the truck starts some distance ahead of the car)
is the acceleration of the truck
The car position instead it is given by the equation
where
is the acceleration of the car
The car overtakes the truck when the truck has moved 60.0 m, so when
Therefore, solving the equation, we find the time t when this occurs:
B)
In order to find the initial distance between the car and the truck (d), we have to calculate first the distance covered by the car during these 7.56 s. It is given by:
This means that after 7.56 s, when the car reaches the truck, the car has covered 97.2 m while the truck has covered 60 m. However, their positions are now equal, so we can write:
And by solving the equation, we find the value of d, the initial distance between car and truck:
C)
In order to find the speed of each vehicle, we use the following suvat equation:
where
u is the initial velocity
a is the acceleration
t is the time
For the truck, we have:
u = 0
So its speed after t = 7.56 s is
For the car, we have
u = 0
So its speed after t = 7.56 s is
D)
Find the graph required in attachment.
On the x-axis, it is represented the time in seconds. On the y-axis, it is represented the position in meters.
Both curves are in the shape of a parabola since the motion of both vehicles is an accelerated motion.
The curve that starts at -37.1 m is the curve representing the car: in fact, the car starts behind the truck by 37.1 m. The curve that starts from x = 0, t= 0 is that of the truck.
The two curves meets when t = 7.56 s: at that time, the two vehicles have reached the same position, and we see that occurs when x = 60 m, which means that this happens when the truck has covered 60 meters.
Learn more about accelerated motion:
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