Question

What name is given to the product of mass and velocity of a body?

Answer 1

Hint: When a body has a certain defined mass and moves with a velocity in a particular direction if it hits another body it'll impart a force on the body the magnitude of the force imparted will depend upon two things mass of the body and velocity with which it was moving.

Complete solution:
A body with mass moving at a velocity we can say that a mass is in motion by the virtue of this mass and velocity body will possess a force
This is called momentum. It is denoted by P and expressed as
$P = mv$
Momentum is defined as the mass in motion or mass content of the motion
Momentum is a vector quantity; i.e., it has both magnitude and direction. Newton's second law of motion states that the rate of change of momentum is equal to the force acting on the particle.
Law of conservation of momentum:
The Law of conservation of momentum states that for a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
When two bodies one with motion and the other collides the moving body imparts energy to the stationary body and the stationary body also starts moving. During this process, the momentum on a whole remains conserved it might get decreased by one body and we can see an increase in the momentum of other but overall momentum remains conserved
It can be put into equation as
${m_1}\Delta {v_1} = {m_2}\Delta {v_2}$
Where
${m_1} and {m_2}$ are the mass of the first and second body.
$\Delta {v_1} and \Delta {v_2}$ are the change in velocities of the body after the collision.

Momentum is given to the product of mass and velocity of a body.

Note: A heavy body with low velocity will have the same momentum like that of a light body with high velocity. Momentum depends upon the moss of the body and the velocity with which it is moving. Momentum is a vector quantity and is always conserved.