The answer is (C) Diagram 3
Below are the choices that can be found from other sources:
A. change in climate
<span>B changes in the atmosphere </span>
<span>C changes in the fossil record </span>
<span>D changes in volcanic
</span>
The answer is <span>C. changes in the fossil record
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Frame of reference refers to something that is not moving with respect to an observer that can be used to detect motion.
Answer:
<em>The y component of his displacement is 11.22 meters</em>
Explanation:
<u>Components of the displacement</u>
The displacement is a vector because it has a magnitude and a direction. Let's suppose a displacement has a magnitude r and a direction θ, measured with respect to the positive x-direction. The horizontal component of the displacement is calculated by:
![x=r\cos\theta](https://tex.z-dn.net/?f=x%3Dr%5Ccos%5Ctheta)
The vertical component is calculated by:
![y=r\sin\theta](https://tex.z-dn.net/?f=y%3Dr%5Csin%5Ctheta)
The hiker has a displacement with magnitude r = 20.51 m at an angle of 33.16 degrees. Substituting in the above equation:
![y=20.51\sin(33.16^\circ)](https://tex.z-dn.net/?f=y%3D20.51%5Csin%2833.16%5E%5Ccirc%29)
![y=11.22\ m](https://tex.z-dn.net/?f=y%3D11.22%5C%20m)
The y component of his displacement is 11.22 meters