Answer:
a) t =12[s]; b) x = 348[m]
Explanation:
We can solve this problem using the following kinematics equations:
a)
where:
vf = final velocity = 12 [m/s]
vo= initial velocity = 6 [m/s]
a = acceleration = 0.5[m/s^2]
t = time [s]
Now clearing the time t, we have:
b)
We can calculate the displacement for the first 12 [s] then using the equation for the constant velocity we can calculate the other displacement for the 20[s].
The we can calculate the second displacement for the constant velocity:
x = x1 + x2
x = 108 + 240
x = 348[m]
Here space craft is moving with constant velocity
Now due to gas leakage it will have acceleration perpendicular to velocity
it is given that acceleration is always perpendicular to velocity
So it will neither increase nor decrease the velocity
it will only change the direction of the motion
so it is the centripetal acceleration of the space craft
in this case we will say that path of the space craft will be circular path
<em>So it will perform Uniform Circular Motion and its path will be a circle</em>
We know, x+y = 180
A.T.Q, x = 3y, y= x/3
substitute the value of y,
x+x/3 = 180
4x = 540
x = 540/4
x=135
Answer:
D) Since the stars would move from East to West just as the Sun and Moon do.
Prima facie means the evidence is valid on its face, or based on the evidence, and the elements.
<h3>
What is prima facie?</h3>
Prima facie, a Latin phrase that means "at first glance" or "based on first impression," The feminine versions of primus, which means "first," and facies, which means "face," both in the ablative case, would be translated literally as "at first face" or "at first appearance." "On the face of it" is a typical translation in contemporary, colloquial, and conversational English.
Prima facie refers to the initial appearance of enough supporting evidence to establish a case, and it is used in modern legal English (both in civil law and criminal law). Prima facie evidence is a term used in common law regimes to describe evidence that, absent rebuttal, would be sufficient to establish a certain claim or fact. In academic philosophy, the phrase is used similarly.
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