What is the relationship between the force applied on a body and rate of
change of momentum?
Is momentum a scalar or a vector quantity?
Answers
Answer:
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Explanation:
Catching a ball which is moving with a high speed is more difficult than catching a ball which is moving with lesser speed. It is easier to catch a ball of less mass than to catch a ball of more mass. The associated physical quantity is called the momentum of the body. The physical quantity which depends on the velocity of the body and its mass and which determines how much force is required to bring them to rest is known as momentum.
The product of mass and velocity of a body is called the momentum of the body. It is denoted by p. Thus the magnitude of momentum is given by
p = mv.
Since mass is scalar and velocity is a vector, momentum is a vector quantity whose direction is the same as that of velocity.
The S.I. unit of momentum is kilogram metre per second (kg m s-1). The c.g.s. unit is gram centimetre per second (g cm s-1).
If the body is moving along a straight line path then it is said to possess linear momentum and if it is rotating then it is said to possess angular momentum.
rate of change of momentum is directly proporsional to the applied force
momentum is a vetor quantity as it needs direction to specify it