Before going to reach at our conclusion first we have to know the basic idea about velocity.
Velocity of a body is defined as the rate of change of displacement of a body between two points or locations. As we know that displacement is a vector quantity having magnitude and specific direction ,so velocity is also considered as a vector quantity.
If a particle is moving along a straight line path, the magnitude of the rate of change of displacement or velocity will be numerically equal to the sped of the body which is a scalar quantity,.
Hence speed in a particular direction is called velocity.
The momentum is mass times the velocity i.e P= MV.
And gravity is the mutual force of attraction between any bodies of the universe which is mathematically represented as
[tex]F=G\frac{M_{1}*M_{2} }{R^2}[/tex] where [tex]M_{1} and M_{2}[/tex] are the mass of two bodies and R is the separation distance between them.
Hence option b is the right answer.
The velocity is the combination of the speed and the direction.
Further Explanation:
Velocity is the vector quantity that has some magnitude and some direction represented in the coordinates system on the x, y and z-axis.
A quantity is known as a vector if it has some magnitude and direction in order to give the details regarding the quantity.
A quantity is known as a scalar if it has only the magnitude in order to give the details regarding the quantity.
Speed is the measure of a quantity of an object that tells how fast the object is moving, in the other words we can define the speed as the distance covered by an object divided by the time taken to cover that distance. It is a quantity with only magnitude so it is a scalar quantity.
Displacement is the vector quantity which is equal to the smallest distance covered by an object.
Concept:
The velocity of an object can be defined as the rate at which the object changes its distance.
[tex]\vec v = \dfrac{{\Delta s}}{{\Delta t}}[/tex]
Here, [tex]\vec v[/tex] is the velocity, [tex]\Delta s[/tex] is the displacement of an object and [tex]\Delta t[/tex] is the total time.
In the other word we can say that an object with some speed and having a unique direction is called velocity.
Therefore, the velocity is the combination of the speed and the direction.
Learn more:
1. Describe velocity.https://brainly.in/question/3480664
2. Average velocity.https://brainly.com/question/190072
3.Difference between speed and velocity.https://brainly.com/question/2880714
Details:
Grade: High school
Subject: Physics
Chapter: Kinematics
Keywords:
Velocity, combination, force, direction, speed, gravity, momentum, distance, displacement, vector, scalar, physical quantity, rate of change.
