Answer:
The person is 187[m] farther and 70° south to east.
Explanation:
We can solve this problem by drawing a sketch of the location of the person and the truck, then we will draw the displacement vectors and finally the length of the vector and the direction of the vector will be measured in order to give the correct indication of where the person will have to move.
First we establish an origin of a coordinate system.
We can see in the attached schema that the red vector is the displacement vector from the last point to where the truck is located.
The length of the vector is 187 [m], and the direction is 70 degrees south to East.
Answer:
![= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%28115%5E2%29%28%5Csin%2030%29%5E2%7D%7B2%5Ctimes%209%2C8%7D%20%5C%5C%5C%5C%3D%20168.7m)
Therefore, highest point that the cannon ball reaches is 168.7m
Explanation:
the cannon is fired at an angle 30 o to the horizonatal with a speed of 155 m/s
highest point that the cannon ball reaches?
![H_{max}=\frac{V^2\sin ^2 \theta}{2g}](https://tex.z-dn.net/?f=H_%7Bmax%7D%3D%5Cfrac%7BV%5E2%5Csin%20%5E2%20%5Ctheta%7D%7B2g%7D)
g = 9.8m/s2
![= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%28115%5E2%29%28%5Csin%2030%29%5E2%7D%7B2%5Ctimes%209%2C8%7D%20%5C%5C%5C%5C%3D%20168.7m)
Therefore, highest point that the cannon ball reaches is 168.7m
Answer:
The work done is
Wd=2.1 joule
N/B work done is the product of force and the applied distance
Explanation:
We know that the work done expressed Mathematically as
Wd =F*d
Where Wd=work done
F=force exerted
d=distance within which the force was exerted
Given from the statement
Force =4.2N
Distance =0.5m
Note we did not use 8.5 m because the force was no longer in application
Hence
Wd=4.2*0.5
Wd=2.1 joule
Answer:
Crystal structure
Explanation:
The repeated pattern of similar particles in a material is called crystal. Crystal structure is the largest constituent unit of a solid matter.
The fundamental identity of a crystal structure is a unit cell that is formed by the arrangement of atoms or ions in a particular manner. A crystal is defined as a regular, long-ranged repeated arrangement of unit cells.
Crystal have a sharp melting and boiling point and they give a sharp edge on being cut with a knife.