Ionic bond: it is also called "electrovalent bond". It is "a type of chemical bond that can often form between metal and non-metal ions through electrostatic attraction";
Covalent bond is a form of chemical bonding, "characterized by the sharing of pairs of electrons between atoms, or between atoms and other covalent bonds";
Metallic bond: "the chemical bond, which is characteristic of metals, in which mobile valence electrons are shared among atoms in a usually stable crystalline".
Explanation:
It is given that,
Mass of the car, m = 875 kg
Initial speed of the car, u = 30 m/s
Brakes are applied i.e. v = 0
The car skids for 5.60 s in the positive x - direction before coming to rest, t = 5.6
(a) Acceleration of the car, 


(b) Force, F = ma

F = -4681.25 N
So, the force of 4681.25 N is acting on the car.
(c) Let x is the distance covered by the car. So,




x = 84.11 meters
So, the distance covered by the car is 84.11 meters. Hence, this is the required solution.
Answer:
<em>Their displacement is 5 Km from the cabin.</em>
Explanation:
The displacement is define is the shortest distance between two points. It is the shortest distance of a line that joins two points together. It quantifies both the distance and direction of the net or total motion along a straight line from the initial position to the final position of the point trajectory. In this case, the straight line joining the cabin to the stream is line S which is equal to 5 Km
Answer:

Explanation:
Potential Energy= Kinetic Energy
Let
be the value of Kinetic Energy.
We know that

Make
the subject of the formula to get speed at the bottom of the hill.

The main function of the cardiovascular system is therefore to maintain blood flow to all parts of the body, to allow it to survive. Veins deliver used blood from the body back to the heart.