Answer:
a) 0.32 m b) -2.4 m c) 1.08 m/s d) -4 m/s
Explanation:
a)
- As the x and y axes (as chosen) are perpendicular each other, the movements along these axes are independent each other.
- This means that we can use the kinematic equations for displacements along both axes.
- In the x direction, as the only initial velocity is in the south direction (-y axis), the skateboarder is at rest, so we can write:
- In the y-direction, as no acceleration is acting on the skateboarder, we can write the following displacement equation:
- For t = 0.6s, replacing by the givens, we get the position (displacement from the origin) on the x-axis, as follows:
b)
- From (2) we can get the position on the y-axis (displacement from the origin) as follows:
c)
- In the x- direction, we can find the component of the velocity along this direction, as follows:
- Replacing by the values, we have:
d)
- As the skateboarder moves along the y-axis at a constant speed equal to her initial velocity, we have:
vfy = voy = -4 m/s
81°.
The law of reflection states that the angle of incidence is equal to the angle of reflection.
Explanation:
In order to determine the work done, we will first calculate the internal energy as follows.
=
= 0.171 kJ
Now, we know that relation between internal energy and pressure according to the first law of thermodynamics is as follows.
= q + w
Since, in the given situation heat energy (q) is equal to 0. Therefore,
= w
= 0.171 kJ
Thus, we can conclude that minimum work that must be supplied to accomplish this compression process is 0.171 kJ.
To make sure I don’t has 35 012345 bishops
The girls distance aquired should be North by 344 degrees