(d) At what time(s) does the object turn around, or change the direction in which it is moving (in other words, what are its turning points)? What is velocity at these time(s)?
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
please answer d
![The position vs. time graph for an object traveling in one dimension is shown below:
x [m]
1
-1
-2
-3
N
4
5
7
-
From t = Os to t = 2s, position is given by x = -0.5t² +t; from t = 2s to t = 4s, position
is given by x = 2-t; and from t 4s to t 8s, position is given by x = 0.25t² - 3t+6.
(a) Draw a set of three stacked graphs describing this motion, i.e. reproduce the x(t)
graph, below it draw v(t), and below that draw ax(t). For each graph, be sure
to write the appropriate equations describing the curve, in addition to drawing the
curve. Make each graph as quantitatively precise as possible.
(b) Over which time interval(s) is velocity constant?
(c) Over which time interval(s) is acceleration constant?
(d) At what time(s) does the object turn around, or change the direction in which it
is moving (in other words, what are its turning points)? What is velocity at these
time(s)?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4143f45a-5c96-4449-af2f-abda697f3e91%2F71ee65b2-4462-4fdc-8e0c-388fc1d57343%2Ftl8jbn7_processed.jpeg&w=3840&q=75)
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